趣味はバイク、特技はケンカ、苦手なものは恋愛という硬派な元ヤンキーのあたしは、恋しなければ死んでしまうヤンデレ系乙女ゲームのヒロインに転生したらしい。いくら転生後の姿が儚げで美しくてナイスバディでも、恋愛初心者の元ヤンに恋をしろだなんて……無理ゲーすぎる（涙）ゲームが始まらないように、攻略対象である、執着系の王太子、鬼畜系の義兄、束縛系の王弟、二重人格の近衛騎士の4人には近づかないようにしていたのだけれど――。
Is this seriously the world of a “game”? If I don’t romance one of the yanderes, I will die!?
Before my reincarnation, I was a former delinquent and a top-class brawler nicknamed the “Crimson Rose” or the “Crimson Demon”, who had gathered the interest of other delinquents. It’s easier to talk with your fists than to talk about love, so naturally, my romance skills are zero.
Despite this, it seems that I have reincarnated as a game’s heroine, someone with a family of good standing and a gentle appearance!
In order to protect my life while cooperating with the investigation of the incident, I will try my best to fall in love, but…
The person herself hasn’t realized it. Serina, the daughter of an Earl and a former delinquent, is cherished and loved by everyone around her. This is the story of her journey to obtain happiness.
