one piece: gene extraction and fusion system

In one moment, he was walking down the street with his little sister— In the next, he had traveled to the world of One Piece, carrying a system that could extract, record, and fuse genes to cultivate powerful lifeforms. Thus began a leisurely and carefree life in the most chaotic world imaginable. When bored, he’d snatch a bit of heavenly tribute meant for the Celestial Dragons. When curious, he’d raise a few cute kittens and bunnies just for fun. When restless, he’d wander through the territories of the most fearsome powers in the New World. Life is beautiful—so why bother taking anything seriously?