I Opened a Treasure Chest in Demon Slayer

Haneda Ryuichi, who traveled to the world of Demon Slayer, has obtained a treasure chest system, which can extract a variety of super items and powerful skills, top breathing methods, Zanpakutō in Shinigami, Haki in One Piece, the straight death eye of the Moon World!

He is the most powerful educator in the world, and he is also the most powerful demon slayer swordsman in the world.

Kibutsuji Muzan’s face was pale: “Haneda Ryuichi, can you stop killing me?”