Hi everyone, i'm looking for 2 types of manga, and i would like to see your recommendations.

1- Romance manga between a delinquent girl and a common boy, like in Onidere.

2- Romance manga where a poor MC joins a Rich/elite academy.

For request 1, try Sekitou Energy. It's just what you said, and it's very good too.

For number 1
Yandere Kanojo

For number 2
Kaguya wants to be confessed to

My current top 3:
Fullmetal Alchemist
Pandora Hearts
3-gatsu no Lion

Yandere Kanojo for the first one too

Since people are suggesting Yandere Kanojo, remember to read both versions that show different events, but I think both are canon.

Yandere Kanojo

Yandere Kanojo (online)

Thank you everyone, will check them 😀