Yandere mom goes from 0-100 waaaay too quick. At the very least she needs to let him keep his phone, that shit isn't cool since she knows he's made close friends in Hokkaido. Really hoping that at the very least his grandma or dad sticks up for him and tells her to chill and let him make his own choices. Really hope ths plot detour doesn't last too long, since we know he has to end up back in Hokkaido. Maybe the mom's crazy will end up finally doing her in from unknown chronic illness, so she can get yeeted out of this manga as fast as she came in.