男女比1:15の貞操逆転世界で高校生活(婚活) (Associated Names)

The main character has memories of a previous life in Japan. Reincarnated in a c*astity-reversal world similar to Japan, the story is about trying hard in high school life (marriage hunting). The school the main character goes to may not have much of a c*astity reversal element. The ratio of male and female students is…