Loop 4 Kaime, Mou Anata Wo Erabanai to Kimetanoni

"I've been caught again by the fate I thought I'd escaped." In her fourth life, Lydia chose to abandon love and live as a witch. She vowed never to choose him again. But then, a request for treatment arrived from the man she once loved more than anyone. And he was suffering from a strange ailment unlike anything he'd experienced before. No matter how many times it repeated, fate remained unchanged. But now, the gears of that fate begin to turn slowly. https://www.cmoa.jp/title/367612/