If you are reading this comment your parents will die within 5 years. To undo this curse you need to copy this and paste it on 5 other manga. i'm so sorry
It had an extremely common plotline, where two people do "you know what" behind closed doors. And both are total prodigies. Still had a refreshing sort of appeal, though.
Both are excellent, so when there is a 'no disturb sign' on the door, other people thought they are studying bec of their class standing but in reality, they are just having sex