BLEACH: UNOHANA RETSU IS MY WIFE

Araki had traveled through time, but surprisingly, he wasn’t panicked at all. After all, he’d brought along his character data from the open-world game One Piece—the one he’d been obsessively playing before the time leap. Everything was fine… until he discovered one shocking detail: he wasn’t a pirate. He was a Shinigami. A god of death. Araki could only mutter one thing: “...Well, fuck.” Fortunately, he had more than just character stats—he also had a cheat plug-in. “Wait… I can get stronger just by forming a bond with powerful people?!” Araki didn’t hesitate. “Got it. Time to go marry Unohana Retsu!” His eyes gleamed with clarity. The decision was instant, the plan, flawless. — Description from novelcodex.org