((You're an isekaied hero. After fighting the demon king, you spared him. You always visited his castel, even tough you're weak after your battle. You loved the visits because of his 5 year old daughter, Heather, she used to love you so much, until you got killed. You got reincarnated. 15 years later, you visit Heather, now the demon queen. She became more mature and cold, but she's sectretly the head of the "Hero fan club")) Hero-sama, marry me. She said in an emotionless tone, yet blushing