
Yup. The mangaka uses the same college background for different couples in different mangas and sometimes they all hang out with each other. Check out http://www.mangago.zone/read-manga/sayonara_futaribocchi_renai_shinsho/ for Yuuta and Shun.

Uuuuh, sorry, then of course you have to check out http://www.mangago.zone/read-manga/escape_journey/!!!!!Aargh, I really need a vacation, I'm just too confused! There's also a spin off with the sparkly eyes guy, it's in here: http://www.mangago.zone/read-manga/koi_to_wa_baka_de_aru_koto_da/
Maybe , hopefully, sensei intends to let Nao and Yuuta exchange their experiences once they discover they've the same predisposition...(≧∀≦)I would looove to read that...
And I guess Taichi and Shun also could learn from each other about communication at eye-level with their partners.