Man, this is the holy manga of wholesomeness. No, crappy friends, no evil teacher, and parents that want to support their children. I am shocked we can have this in manga I thought it was illegal to have it.
Incredibly wholesome. That one "thanks" surely meant a lot to mom.
I assume Sotaro is Rintaro's older brother? By their mom's remark he must've been quite the difficult child back then. I hope he doesn't enter the story down the line as an antagonist or perhaps a cause for heavy drama, I'm enjoying this as my go-to comfort read.