The legitimate is an official permanent gamepass that provides a system alert whenever a Blox Fruit spawns naturally in the world.

In the chaotic seas of the Blox Fruit world, Kael was tired. Tired of hunting for hours, tired of watching mythical fruits slip away to players with faster internet or better luck. Every server he joined, someone else would shout, "FRUIT AT KING'S CASTLE!"—always two seconds too late.