I Opened an Evolution Cabin in One Piece and Even the Four Emperors Wanted to Become a Member

Lin En took the "Gene Evolution Cabin" to the world of One Piece and opened a shabby shop in Demon Valley Town. Here, he can restore the ancient bloodline of the fish-men and make up for the flaws of the Devil Fruit, but the payment method is extremely tricky: either the ancient weapon design drawings, or the ten-year lifespan of a strong man. From then on, the order of the sea was subverted. In order to heal his arm, Red Hair had to exchange secrets; Hawkeye was willing to bet Black Blade Night in order to break through the bottleneck; Kaido was unwilling to die, but was sold the "Indestructible King Kong" package. When the Navy's demon-slaying order was wiped out outside the store, and when the Five Old Stars came in person but were blocked by the words "Dragon people and dogs are not allowed in," everyone realized that the manager of this small shabby store was the real "Supreme" in this sea. This novel and its characters are purely fictitious. Any similarity is purely coincidental and should not be imitated.