Two-world transaction: I let Nami sign a contract to sell herself

Ike grew bigger and bigger in the sailing world. He awakened the trading system, which made him the most untouchable businessman on the sea. "Want power? Sure, just pay for your life!" "Not strong enough? No problem, you have to pay more!" "Want health and longevity? I have various life packages here, you can choose!" When pirates and nobles are obsessed with trading... Ike's eyes are on Nami, Robin and many beautiful girls from other dimensions. These are not satisfied by the primary package! ...