You know what im feeling? Im feeling that these girls are so innocent even though some of them slutty and some of them are delinquents. These girls are so innocent even the ones come from co-ed school like kodera (well she had trauma). I think all of these girls need more interaction with boys, its like they r either hard rejecting him or falling in love so fast. This only happens when u dont have much experience with these situations like she was teasing him, having fun and all it just took one time she get consoled when feeling down to fall in love with him. When u think about it, isnt other girls are also the same? The ones i remember for example: ushigome, mc saved her from the rape attempt she fell in love. Inukai she got some help multiple times in a row and fell in love (well she didnt realize it early but still). Well i dont remember the other ones but its probably all similar simple things that make them fell in love this fast, the difference is some understood, accepted it and some didnt understand so it took a lot of time.