As Muichiro's favorite, Tosai was unprepared and thrown into the Demon Slayer World by an unreliable system while collecting stamps at a comic exhibition. He also fell directly from the sky in front of the main owner and his brother.
Tosai, who happened to be cosplaying the battle-damaged version of Kasumashira, took a deep breath.
Tosai: ... Let me go back to Mars!
But how could Ichiro and Muichiro turn a blind eye to a seriously injured person who looked exactly like their younger brother/himself and immediately picked him up?
Tosai: I suddenly have the urge to cosplay a certain bandage waste device :)
Before he had time to personally restore the "Complete Manual" to escape reality, Tosai shamefully succumbed to the temptation of the system's "Muichiro Post".
System: Hey, man~
Mission: I wish everyone a bright future
