Hayaku Otona ni Narinasai.Hayaku Otona ni Narinasai; はやく大人になりなさい。; 不想长大，快点长大

Being an adult is a burden. I’d rather stay as a teenager forever. But, thanks to my handsome biology teacher, Mikasa, I’m slowly learning about the adult world?! What will I learn in today’s lesson? The adult love comedy, finally in comic form!