Dreizehnn
I have seen lot hate at Kariya for being weak, creep, failure you name it(some here and some in other novels) but seeing Sakura and how broken she was, him running away was just him not wanting to experiece that and yet him returning still tring to save Sakura, messing up lot of things and doing some questionable decision yes but still going through procedure that painful and he knew it will kill him just to save her that wasn't how coward acts. I just pitty him for faling in love with woman like Aoi.