In a fantasy world where eating Skill Fruits grants magical abilities, Light Underwood dreams of being a great adventurer. But the first fruit he eats gives him the “Fruitmaster” skill — which only helps him grow fruits, and is virtually useless in combat. Meanwhile, his childhood friend Lena eats a Sword Saint fruit and quickly becomes an S‑rank adventurer. Light resigns himself to a quiet, non‑glamorous life: farming fruit and training with a sword. But then everything changes — one day, he accidentally eats a second Skill Fruit, which should kill anyone who already has a skill. To his shock, he survives. He discovers that his “useless” Fruitmaster skill actually has a hidden power: he can eat unlimited Skill Fruits without dying, and each time he does, he gains a new skill.