I don't think her childhood is really that sad tho, she's having fun by herself, also not everyone can enjoy to get along with other so just because she's by herself doesn't mean she's lonely
are y'all sure the doujin related to this? the character name is different tho, in doujin the fmc name is Rika while in this manga the onee-san name is Kirigiri Saori
I really want this mysterious caller fuck off, their development is already good even without him/her. Also it kinda ruining the fluff that I want, just don't make the drama too intense or complicated....
@Logic but the early chapter of kaguya sama is already explaining how does she change from being cold princess into a tsundere cold princess within almost one year