[Crossover] + [No CP] + [Plot-oriented] + [Not invincible]

The protagonist has the same appearance and Sun Breathing as Yoriichi Tsugakuni, but his strength is not as strong as Yoriichi Tsugakuni, and his personality is exactly the opposite.

Gu Xuan: I can’t protect anyone I want to protect. I am a worthless man.

Everyone in the Demon Slayer Corps: It was Mr. Guxuan who led us to kill Muzan Kibutsuji, and it was also Mr. Guxuan who saved us when we were in crisis.

"Ding~ Get a growth-oriented combat and life dual-purpose doll..." Looking at the small and cute doll, as delicate as a doll, and the huge sickle in her hand... Bai Ran was a little indifferent. Is your "doll" serious? "Needs to replenish energy..." [Favorability increases...] [Favorability increases...] Bai Ran: "..." Okay, now I know whether it's serious or not.

Lin Guang travels through the world of Demon Slayer and awakens the Super Treasure Chest System! In Demon Slayer, slaying demons unlocks treasure chests; defeating the navy and celestial dragons unlocks treasure chests; and defeating enemies unlocks treasure chests in Naruto. Thus, Lin Guang continues to unlock treasure chests, conquering the world!