A young man who reincarnates into the world of his favorite otome game finds himself in the body of Alba, the frail and sickly son of an impoverished noble family. In this new life, he is unable to use magic and has a very short life expectancy. His fortunes change when his mother remarries into a powerful duke’s family, and Alba is taken in. To his astonishment, his new stepbrother, the duke’s son Orsis, is the very character he adored above all others in the game from his previous life.

Alba’s joy is short-lived when he recalls the original storyline. In the game, the character he has become is a minor figure who only appears in Orsis’s personal story arc and is meant to die young. This tragic event is a pivotal moment that causes Orsis to lose his smile forever. Rather than accept this fate, Alba becomes determined to defy the game’s script. He resolves to live a long life not only to avoid triggering his stepbrother’s sadness but also to continue openly adoring him. His goal is to smash all the death flags surrounding him and change the future, believing he cannot die until he sees his favorite character grow up happy.

Alba’s efforts to twist his destiny are both dedicated and heartfelt. He decides to cure his own illness and sets out to become closer to Orsis. His actions include lecturing his stern stepfather for being too hard on Orsis, bravely venturing into demon-infested forests to find medicinal herbs that might cure his ailment, and constantly praising his stepbrother to boost his low self-esteem. As Alba actively works to evade the original plot, his determination and affection begin to alter the course of events around him, gradually turning his dire fate around in a warm and heartwarming isekai fantasy.