Eternally Regressing Knight (Korean: 오늘만 사는 기사, RR: Oneulman Saneun Gisa) is a gripping dark fantasy webtoon and web novel written by Seoneung and illustrated by D-No. It is a unique entry in the "Regression" genre, focusing on the psychological toll and the strategic despair of a protagonist trapped in a time loop while trying to save a world that is destined to fall.

The story follows Erihard, a knight of a fallen kingdom who survives a catastrophic war against the "Abyss." Upon his death, he finds himself regressing to the past, but with a twist: he keeps regressing every time he fails or dies. Unlike many power fantasies, Erihard is not inherently "overpowered." He is a skilled but weary man who must use thousands of lives to learn every enemy pattern, every political trap, and every missed opportunity to prevent the apocalypse.

Alternative Names and Titles

Eternally Regressing Knight / 오늘만 사는 기사 / A Knight Who Eternally Regresses / Der Ritter lebt nur heute / The Knight Who Only Lives Today / Le chevalier qui ne vit qu'aujourd'hui / O cavaleiro em eterna regressão / Caballero en eterna regresión / อัศวินวันเดียว / 死に戻り騎士は今日も生きる / 只活今天的轮回骑士 / 今日騎士 / Powracający Rycerz / Oneulman Saneun Gisa