>>/7258/
For example, in Volume 4, there's like 4 pages at the end of >>/7255/ Hashida going home, it introduces his three sisters and has a little comedy bit where each of them wants a boyfriend. The oldest wants a hottie, the middle wants a guy who's gonna be successful in life, and the youngest wants a cute guy. Hashida mentions Yatora, who is a very driven person and by his admission 'a hottie', so the two elder sisters are interested, the youngest one tugs on his sleeve and asks if he's cute, Hashida says no, so she says "okay, not for me" and turns away.
It's a cute little bit that fleshes out a side character, as the story has no reason to introduce Hashida's sisters.