
Mmmmm ya Yohei might seem like he's dumb for thinking the way he did but let's not forget that he had a past trauma where his mom, his only family and support, left him and never came back. So for a timid character like Yohei instead of getting angry, getting anxious on being left behind by someone you love is the first thing he would worry about.
Trauma is something not to be taken lightly of, people have different thought process and that's what makes people messed up in different ways :/
O shit Hyun is not safe!!! WE HAVE TO GET INSIDE THE STORY AND SAVE HIM!!!!!!