Anime Crossover: I Married Tsunade and Became the Lord of Nazarick

Luo Ya transmigrates into the world of One-Punch Man and awakens the Two-Way Portal System, which can connect to worlds across the multiverse. From the start, he marries nine wives!

Robin: "My husband is the strongest in the world, except for Saitama!"

Albedo: "I exist to make Lord Luo Ya the Supreme Being!"

Tsunade: "Sure, our lower limit is low, but our upper limit is high! With the Rinnegan, the Tenseigan, and ten Jinchuriki, my husband is invincible, except for Saitama!"

Morgiana: "Sure, our lower limit is even lower, but our upper limit is higher! The 72 Demon Gods, plus the Holy Palace, are enough to make my husband Luo Ya the Lord of the Plane. Surely the Lord of the Plane must be invincible, except for Saitama!"

One day, Luo Ya, invincible beneath the heavens, comes face-to-face with Boros, an enemy from the heavens above.

Luo Ya: "Sorry, big brother in the spaceship, but I'm the strongest in the universe, except for Saitama!"

This novel and its characters are entirely fictional. Any resemblance to actual persons or events is purely coincidental. Do not imitate.