
The problem is that things are too rushed. I mean, Mafuyuu told his BF to go kill himself for him, and Yuki did.... I couldn't live with this, because come on, how high is the change that Yuki would have killed himself, if Mafuyu didn't tell him that? But anyway, how much time did pass since his death? 6 month? A year? I don't know, but one thing I do know for sure, I wouldn't be able to say that I love someone different, after such a short time, and after being the main cause of someone's suicide. Not if that person was my boyfriend. I think Mafuyu has a serious problem, and he should visit a specialist. He is always afraid of being left behind/alone, and those things often come after a trauma. He really needs to talk with a specialist about it. Or it will lead to a sad life. Well, if it was in real life, but this is a manga, so...

You have a point...
Tbh... I am disturbed of Mafuyu dating Ueno after a while of Yuki's death (I said after a while since idk if how many months or years ago, Yuki died) .. Since.. He is still healing from the trauma and pain..
Like recover 1st before date..
Many relationships fell apart becauae of this "I am still moving on with ex but I am dating a new one" situation..
I’m not saying Mafuyu deserved this but, he was thinking of Yuki and maybe now he realizes how much Uen is special to him