toma is crying because minjoon is sad. and they keep mentioning that he's a uni student because daichi is a yakzuka and his brother is catching on that yuri is actually minjoon.
As far as i know, there was this gatherings in the family side of daiki and they asked minjun to act like a decent girl with the name of Yuri. So now, daiki's family know that daiki is wtih a women but his brother(maybe he knows it now) knows that Yuri is a Man. I don't really know what's the big deal out of it but i guess, daiki's fanily side hate homos or hate being categorized with homos.
They keep on mentioning he is a university students. Can someone explain what that has to do with anything ? Why is Toma sad because yuri is a uni student ? I think I missed something (=・ω・=)