Dumbass really pulled a knife out over some Pentarou keychains.
Sooo.... we know the deal with Kishika's mom thanks to here and the Volume Extras... what happened to her dad though?
It's interesting how Kishika is sort of a mirror to Chiyo. Chiyo was always dutiful and responsible to the point that felt like it was expected of her, so she never got the chance to be a kid and is now getting that chance thanks to the Rentarou Family. Kishika however forced herself to grow up so fast to care for her siblings that she yearns for the chance to be pampered herself and acts like a baby when someone does. One tried growing up too fast but is getting the chance to act her age, the other did grow up too fast and now secretly wants to act younger than she is. Let this be a lesson in growing up: don't try to force yourself to grow up too fast, it just causes yourself problems in the long run.