Hoshino Mi had never imagined that his childhood sweetheart, Eriri, would be humming softly in bed at night, looking at secretly taken photos of him.

Even worse, Kasumigaoka Utaha claimed she'd drug men if she couldn't woo them, Kaede and Suzu frequently impersonated each other, and a group of women in a band would occasionally call out Hoshino Mi's name while creeping about in the darkness.

Faced with these naive women, Hoshino Mi couldn't help but question whether he'd been too sensitive to them.

He didn't follow the ship, but traveled to the world of One Piece in his physical body, and became younger. He woke up in the sweet artificial respiration of the beautiful girl Nami. In the process of stealing the pirates' treasure with Nami, he accidentally ate the devil fruit related to double cultivation, and gained a variety of abilities such as silicone body, fifth gear, vibration, electric shock, lubrication, transparency, energy absorption, double cultivation, etc. Although the ability is very evil, it is an ability that can make the girls in this world happy! The fruit ability allows Xinan to gain strength through double cultivation. Everyone wants to become the Pirate King, but Xinan only wants to be the Sea King.