Oda-chan to Akechi-kun

Overview

I should not be falling in love with this person... Enemy or lovers? The fiercest rivals in history return! Ryunosuke Akechi is the school's toughest delinquent, while Maria Oda is the beautiful idol of the school. Two people who live in different worlds, they start going out after Akechi confesses his feelings. However, when they kiss for the first time, memories of the fiery betrayal at Honnouji fill their heads...! A turbulent high school life begins, as their present-day love affair becomes intertwined with grudges from the past! (Source: Morning, translated)

Source: AniList