It was in vol. 5
That never happened (?), but maybe you are thinking about the volume when Senpai goes to Canada and Morinaga visits him? If that’s the case, then it’s Vol 5 Ch 3
Hehehe
Gomen gomen
Its been so long since i read them both so
I mixed the manga koisuru and the other....
Its just cause they look the same and their personalities tooooooo
and they work in college too..
Welll.... thankssss i reread it again (=・ω・=)
Ps. If you want to read the manga heres the link
http://www.mangago.zone/read-manga/takaramono_wa_hako_no_naka/
Well, reading your comment I thought about a different manga, where a long-haired guy actually goes to the US to see his younger lover, it's a oneshot thou.
http://www.mangago.zone/recommend-manga/takaramono_wa_hako_no_naka_dj_takaramono_wa_mune_no_naka/
Does any one knows what chapter senpai visit morinaga in usa??
Just want to reread that part again ..