The only reason I can't fully enjoy this manga is because Shuun ended up with Yumi's senpa...

Huh?

Well it's the same Shuun from Hadakeru Kaibutsu. Isn't it? They are both named the same, they look the same and they're both huge down there. So this is why, it's hard for me to totally appreciate this manga since I feel like its the same Shuun that's having a true romance with another man years later after college.

Oh no this isn’t the same guy. The one from hadakeru kaibutsu is Shuuna not Shuun and this guy has facial hair and Shuuna doesn’t. They just look pretty similar which could be confusing hahaha

Also I believe Shunsuke is this guys first name and his last name is Shimada in Hadakeru Shunna’s first name is Ayumu

Well if it's not the same guy, okay but they really do look the same, specially when he shaves, it's basically the same person but with glasses

Its not the same guy, also Shunna ( the one from hadakeru) , clearly states on this page http://www.mangago.me/read-manga/hadakeru_kaibutsu/mi/e4de88c2dd055b9b45ff0d9d4efa4e61_chapter-1/18/ that his first time with a man was with Kan-san, on the pages before this one he also says he has always been with girls ONLY. Shunna is heterosexual, he likes girls, he never loved any of them though, but love is one thing lust is another, now we could say he is bisexual( after meeting Kan-an). While shun-chan says he is gay, girls dont do for him, he only dated girls as cover as you can see here http://www.mangago.me/read-manga/sayonara_futaribocchi_renai_shinsho/nbt/1f761ed998c2ed69/Ch1/11/

Shun-chan is way taller, he is freaking 1,90cm !! Shunna is like 1,82 or something. Shunn-chan's ear is pierced, Shunna's isnt. TBH if you reread Hadakeru's first chapter youll remember other things that Shunna says that makes it impossible for him to be Shunn-chan. And yeah as stated above their names are different. About their faces being similar yeah, they are thats a common thing in most mangaka's works, their characters from different stories look similar, if you ever read Natsume's works youll notice it too. Its like they get used to draw only two types of faces or something lol I totally get you.

Very detailed, thank you. It's true that most of them only have a few faces for all their characters. Well, I can enjoy it fully now.

I'm pretty sure these guys are from Escape Journey, Naoto and Taichi are the main couple in Escape Journey

Yes!!! They are!!

It is the same guy.but they didn't end up together

Thanks