Pokemon Crossover? Cynthia Is My Wife from the Start

On the first day after transmigrating to the combined Pokemon anime world, Xi Nan worked as a bartender in an underground bar.

On the second day, he got a marriage certificate with Sinnoh Champion Cynthia.

Why? The drunk Champion had dragged him out of an alley and into her sports car the night before, taken him back to her private estate, and spent a wild night with him.

Then his sign-in System awakened.

[Ding! Host detected passionately battling the Sinnoh Champion for five hours. Sign-in successful!]

[Reward issued: Twelve Talismans: Horse, Dog, Ox, Tiger!]

Horse Talisman: Heals all injuries and illnesses.

Dog Talisman: Grants immortality.

Ox Talisman: Grants immense strength.

Tiger Talisman: Balances all forces.

From then on, when Charmeleon blasted him in the face with a stream of fire, he just brushed off the ashes.

When Garchomp roared so loudly the heavens shook, he merely raised his chin.

Cynthia: "...Who are you, really?"

Xi Nan: "Your legally wedded husband."

Everyone: "Wait, why can a bartender punch a pseudo-legendary flying?!"