Yeah, if Shio is a girl, she definitely inherited her emo traits from the mother. The mother probably just got (a little) better as she grew up and got married.
I brought the reference guide.Pat patI see, Shio and Renya-kun are classmates.Huh? Renya-kun and Nanika-chan.Eh, the vet...!?Thank you for being friends with my niece.Eh?Eh?A girl?Please look after Hongou-kun, or rather, Shio-chan.Space Ren