@Kevadu specifically at the start of Chapter 147 it's implied that the famous doctor is the grandfather of Kashiwagi's boyfriend, and he mentions that both he and his son each had their first child at 17, so this is a reference to that "family curse"
@Werebearguy her love of metal is actually slightly hinted at all the way back in Chapter 1 when she listens to music to calm down (it's implied to be a loud kind of music), but it's really really easy to miss and I don't blame anyone for not realizing it because the other group translated it...
There's going to be a Last Act at the end of this volume?? Already???
Don't tell me the series is getting axed or something... I don't know how they're going to resolve everything cleanly within 6 chapters!