He knows that his mom is dead, in his reality she died for him, if he stays in this world his mom would've died for nothing, and his conscience wouldn't let him do that. Cut him some slack, it's not like he really wants to leave Caius...
OH MY GOD GURL CHILL TF OUT HAHAHAHA IF YOU WERE IN KOICHI'S PLACE U'LL DEFINITELY FEEL HOMESICK DESPITE HAVING CAIUS BY YOUR SIDE, NO? fujoshita
ISTG MY HEART ACHES FOR CAIUS SINCE HE DID SO MUCJ FOR HIM also I lowkey don't like my toxic household so maybe that's why it's hard for me to really relate to koichi ┗( T﹏T )┛
This so cute istg I started to cry