Chapter 2: Field Experiment
As promised, Kyoya went again to Rein's house for this 'field experiment' of his. He would be lying to himself if he said he is not excited, he could hear his own hearts beating faster and faster as he approach closer to Rein's house. He clicked the doorbell, it isn't long before the sunny husky appears to greet him. 
"Kyoya! Right on time hehehe", greets Rein excitedly, his tail wags so hard it creates some wind. "Right right, I mean if I didn't came you would just barge into my house again", answered Kyoya dismissively, trying to hide his own excitement. "So, how do we do this?", asked Kyoya. Rein took out two zipper that Kyoya is familiar with. "So the gist is we use this on people and try to feel what's like being somebody else, I have tweaked this zipper so that anyone we put this on would not be conscious that they have been turned into a skinsuit and it would work even if the person is wearing clothing, once they are turned normal back, they would feel like it is all just a dream and would not suspect anything", explained Rein. That is awfully convenient, thought Kyoya, but it is not surprising for Rein to make sure there is not consequences for both them and their 'experiment subject'. "But... uhh..", says Rein timidly, fidgeting around. "But?", asked Kyoya as he cocked his head at Rein. "I don't really go out of my house, so I'm not sure where or who we should try experiment with...", the husky confessed as his ears flopped. Ahh right, Rein is a shut in and rarely go out of his own house, unless he really needs to, thought Kyoya as he began to brainstorm. Until he actually reminded by something from his daily basis. When he goes to gym and and looked around, he wondered how it feels to be muscly like the other men he sees at the gym. He then explained it to Rein. "A gym eh...", said Rein, as if thinking deeply. "Yeah that sounds fun! Let's do it!", he shouted excitedly. "*Giggles* Then it is decided, I will show you the way", says the Lion, perked up at the fact that he would be able to make his daydream a reality soon enough.
Soon enough, the duo eventually reaches the gym that Kyoya had mentioned before. "Remember what we discussed on the way here?", questioned Rein, making sure Kyoya remember what they are going to do. "First, we just find our target and try to lead them to the toilet, then we should swiftly put the zipper on our target when we know there's nobody around. We would wear it in one of the shower stall and then we should meet at the front of toilet entrance. We would use a code word to make sure that we're seeing each other, you would say [Sure a lot of rabbit today] and I would say [Yeah, especially Riddle], did I get it down?" recounted Kyoya of the discussion. "Great! We're good to go, good luck comrade!", saluted Rein childishly. They goes in separately as to not attract any suspicion. 
Once inside, Kyoya lean onto one of the gym walls and eyeing people that are using the gym. He could see some horse, lion and bull guys. All of them are really sweaty from the exercising. They must have a really strong musk... Kyoya mind wandered around, eventually he found himself looking intensely at a certain crocodile man. If he is not mistaken, crocodiles have... slit. This might be his chance to experience having one. Now that he have decided his target, he slowly approaches that guy and gather some courage to greet him.
"H-Hey...", greeted Kyoya timidly. "Hm? What's wrong bud?", asked the crocodile, he slowly stop from his exercise. "I uhm.. may I ask your help to check a bit at my back? I think there's something stuck at my back, but I'm too shy to do it here, can you check it in the toilet with me?", says Kyoya with whatever excuse he could think of at that moment. The crocodile eyeing him up and down, "Sure, why not?". Kyoya breath a sigh of relief internally. They went inside the toilet, which Kyoya began to lift up his shirt to show it to the crocodile. "Did you see anything?", asked Kyoya trying as hard as he could to act natural. "Hm.. I'm not seeing anything, was it your imagination?", said the crocodile as he searches around Kyoya's back. "Oh hahaha I guess it have fallen of! It's great then, I'm sorry for taking your time and thank you", said Kyoya, scratching his head. "It's alright bud, I will take my leave now then", answered the crocodile, unaware of what is going to happen to him. As the crocodile turns his back to Kyoya, Kyoya looked around to make sure there's nobody with them before quickly taking the zipper from his pocket and put onto the crocodile's back. Before the crocodile guy could even notice what happened, his body instantly transform into a skinsuit as his consciouness fade away. Kyoya looked at the brand new crocodile skinsuit on the floor, his heart is beating hard. He swiftly drag the skinsuit into one for the toilet stall and began to undress himself, getting ready to enter the skin suit. He could see how big the crocodile is compared to him. As he already did so with Rein, it is not too hard to wear the skin suit and once he's done, he tapped onto the zipper twice to hide it. 
Kyoya slowly began to process the he is now a big crocodile guy, he could smell the crocodile sweats and how strong he feels in this body. In front of his eyes he could see the crocodile muzzle. His skin is rougher now too due to the scales. Some memories began to enter his mind, did Rein also include such function? This crocodile guy name is... Henry. As much as he wanted to check his new body, he have promised Rein that they would meet at the toilet entrace once they have succeded. Kyoya walks to the front and began to wait for Rein. He lean onto the wall and crossed his hands confidently. Weird, this is not his usual demeanor, perhaps the crocodile personality began to seeps into him as he wear the skinsuit. It just felt... natural to do what the crocodile would do. After a while, a hyena guy with a glasses approached him, the hyena got a laid back face on him, a bit shorter than him. They stare at each other before the hyena guy began to say, "Sure a lot of rabbit today...". That's the code word! "Yeah, especially Riddle", replied Kyoya. As the hyena heard his reply, his face quickly changed to a big smile that is very similar to what Rein usually have. Now that they are sure of each other, they put off the facade of the original body personality. "Hyena huh? Why's that?", questioned Kyoya out of curiousity. "I wanna check something a bit with this hyena body hehehe", replies Rein.

"Now what?", asked Kyoya again. Now that have succeded, they haven't actually discuss of what they would do next. "We could try checking out this new body at a more secluded place but first... we gotta shower of course, can't just go around being all sweat!", explained Rein. As much as Kyoya would prefer to smell his body musk longer, he could just do it later. They both went into the shower, as Kyoya was about to enter one of the shower stall, Rein also follow him from behind. "Whuh?", confused Kyoya. "What? Can't we just shower together? I wanna take a look at your body while we shower too", said Rein somewhat innocently. "I mean...", Kyoya think it would be weird for two guys to enter one shower like that, but then he brushes it off and let Rein in.
They both began to undress and get fully naked, even if this is not their own body, Kyoya can't help but feels a bit embarassed too. "Wow so this is how a crocodile slit looks like", said Rein as he looks at Kyoya's crotch in a more scientific observation than a lustful one. The feeling of having someone eyeing your crotch is oddly arousing, as he could feels his crocodile dick slowly began to harden and poking a bit out of his slit. Rein noticing it, just looked at Kyoya and gave a mischievious grin. Kyoya opened the shower water and began to shower alongside Rein. He eyes Rein's body and could see that the hyena guy got a well toned body, while him have a more rough muscly body. He imagined how it feels to rub each other body together while being in shower but quickly brushes it off. Once they are finished, they changed clothes and packed previous clothes, including their own original clothes into the bag of the body that they borrowed.
"What place should we go? This guy's place... no can do, he got a family at his house", pondered Kyoya as he access the crocodile's memory. "Then we could to Ethan's place, he lives alone in his appartment. Oh Ethan is this hyena's name hehe", said Rein. "And mine is Henry, I guess we should use those name to avoid suspicion", replied Kyoya, which Rein nods in return. Rein then leads Kyoya to a car and he sits at the driver sit. "Wait I thought you doesn't know to drive?", questioned Kyoya, he knows that Rein had never drive a car before. "Don't worry about it! The zipper let us use the ability of the body that we borrowed, so now I could drive this car like a pro too!", says Rein as he happily tapping the car steering wheel. Kyoya just went a long with it as he knows he could trust Rein in his word, and it is evident once Kyoya and Rein rode the car as Reid drove it swiftly as if he have drove a car for years. "Nice driving skill, Ethan", teased Kyoya as Rein just laugh loudly in return.
Eventually, they reached the hyena's apartment, and it seems his house is at the 10th floor, it is already starting to get dark once they have reached the hyena's house. Rein's opened the front door with a key that he obtained from the hyena's bag. The house is not so bad, it seems the hyena is wealthier than he looks. "Let's do the 'inspection' in his room", said Rein with a wink, and Kyoya just gave a knowningly smile. They went inside the room but didn't open the light and let the night city light brighten the room softly from the window. They both began to undress again. Rein went onto the bed and lay down naked, as if inviting Kyoya. Kyoya gave a lustful smile and join Rein on the bed.
They body eyeing each other bodies and also their own. Only now Kyoya realizes how ridiculous this situation is, they are both in a stranger body and being naked together on the bed of the stranger. Rein began to touch Kyoya's body around as if doing an observation, he spotted Kyoya's slit and began to spread it open which results in Kyoya jolts from the shocked. "Woah, is it sensitive? The slit?", asked Rein curiously. "Y-Yeah... I didn't know that it would feel this sensitive, this felt so different from having my own dick... but it felt amazing in it own way", explained Kyoya. "Wahhh now I wish I would have gone for having a slit either!", said Rein enviously. "But there's a reason why I went with a hyena, they said hyena doesn't have knots like us canine, so I wanna see it myself", Rein confessed the reason of why he went with hyena. "Well then now should be the time to find it out...", said Kyoya as he began to give Rein's hyena cock a lick. "K-Kyoya...", Rein could only says much as he moans from Kyoya's sudden advance. Rein's cock slowly becoming fully erect from Kyoya's licking. "W-Woah... it's true... there's no knot... but the tip looks unique in itself...", Rein said his observation despite no being able to catch his breath from his excitement. Then all of the sudden Rein pushes Kyoya, causing Kyoya to fall onto his back. "D-Do.. you mind if I put it in your slit...?", asked Rein, as if he can't control his desire anymore. "Go on Rein, use my slit as much as you like", Kyoya tries to keep his composure but he can't held back anymore. Rein began to insert his dick into Kyoya's slit, it entered slowly and slickly thanks to Kyoya's licking just now. "Ngh...!", moaned Kyoya as he feels a foreign rod entered his slit, he could feel his crocodile dick rubbing with Rein's hyena dick. "Is this how it feels to have a pussy?", Wondered Kyoya. Rein slowly began to pick up pace, the bed creak from their excitement. "I-I think I'm getting close Kyoya!", said Rein as he humps harder and harder. "Me too, Rein! Feel me with your hyena cum please!", shouts Kyoya. They both began to cum inside's Kyoya's used slit. Rein falls onto Kyoya with his tongue lolling out. "T-That was amazing Kyoya...", Rein licks Kyoya. Kyoya rubbed Rein's head and said, "Good boy... you came a lot...". Hearing that, Rein gave a happy tired smile. Afterwards, Rein slowly take out his dick from Kyoya's slit, cums began to oozing out slowly from Kyoya's slit, Kyoya's crocodile cock began to appears afterwards.
The both lay down onto the bed after the exciting sex. "We should head back but it is late night now...", said Kyoya wondering how to get back. "Welp, we will just head back tomorrow and sleeps here for the night hahaha", said Rein as he hugs Kyoya by his side. "Guess it can't be helped, let's just sleep here then", Kyoya began to hug Rein too. They slowly falling asleep in each other embrace as the smell of their cums fills the air.
Light shones onto Kyoya's eyes, cause him to slowly wake. Kyoya yawns and startled by his own deep voice. "Oh right, it wasn't a dream, I did became somebody else...", said Kyoya as he looked at his hand and sees a scaly hands. "Morning sleepyhead, come in I made some breakfast, this Ethan guy is really good at cooking! I'm sure you will like it!", said Rein as he peeks through the door. "Oh don't forget to shower first of course", continued Rein. Kyoya stares at nothing for a while. "Hey Rein...", Kyoya's called out to Rein causing Rein to peek again through the door. "What's up?", asked Rein, he seems more calm, maybe the hyena's personality rubbed onto him a bit. "What if we shower together...?", asked Kyoya briefly. "Oho... kinky~", Rein said mischievously as if knowing what Kyoya had in mind. "I already showered but alright, this is a rare occurence hehe", Rein agrees. Rein began to undress and enters the shower with Kyoya. Kyoya opened the shower and they both shower together. Kyoya grabbed Rein and began to rub his body with Rein with a hug. They both moaned and began to get aroused. Kyoya's dick is getting out from his slit as so is Rein's dick. Then Kyoya's lifted Rein easily by the arms, which shows just how strong this crocodile body is. "Woah!", surprised Rein. "I want to try be the top today, this body is actually have a really dominant personality, so I have tried so hard to held back", explained Kyoya. Kyoya then inserted into Rein's virgin butthole and they both moaned together. Kyoya just lift Rein's body up and down easily as he humps Rein's butthole. Rein could see a hyena with a smaller body being humped in the air by a big crocodile in the mirror of the shower. Eventually they both came, Rein could see a bulge forming at his stomach because of how big Kyoya's crocodile dick is. Rein felt so full with cum. "Ha... Ha... that was awesome...", said Rein as he tried to catch his breath. "Yeah...", answered Kyoya shortly as his pop out his dick from Rein and let cums ooz out from Rein's butthole and falls onto the floor. After feeling satisfied, they cleans up properly and get dressed.
Kyoya could see some nicely cooked dishes on the table. "Damn this guy knows cook", praised Kyoya. "Hehehe thanks~", answered Rein, even if it is the work of his borrowed body. They both eat the food and it tastes really good. They then briefly went back to the gym with Ethan's car. They get out from the skinsuit in different toilet stall and take off the zipper. Ethan and Henry slowly wakes up as if they are just waking up from a dream. "Hey thanks for helping me! I will take my leave now Henry!", said Kyoya thanking the crocodile. "Oh uhh.. sure bud...", replied Henry, still in a daze, did I told him my name? Pondered the crocodile.

Kyoya and Rein then began to meet again just a bit distance from the gym. "So how was it? hehehe", asked Rein even if he knows Kyoya had a lot of fun being someone else. "I-It's obvious, do I really have to spell it out, I had a lot of fun...", blushes Kyoya as he looks away. Rein grins in return as both of the boys went back to their home, to their previous, original life.