A young man whose hair turned white overnight because he looked like a girl was deceived, discriminated against, excluded, disdained and despised. Fearing to experience these things again, he is unwilling to interact with people often. Even if he has friends, he only has a very small number of close friends.

His father passed away due to years of overwork, and his mother and adopted sister have always been with him and never left him.

"Brother, look, these are the cookies I made. Am I awesome?"

"Brother, can you accompany me to the park tomorrow when we have a day off?!"

"Son, Mom is going to pick up your sister from school tonight. Go buy some vegetables and come back to cook!"

However, this time it is a farewell forever!

"Do you have any other wishes? I will do my best to make them come true for you!"

"Can you take good care of my mother and my sister for me?"

"Okay, I promise!"

"Ding! A suitable host has been found, and the Demon Slayer System has begun binding! Binding completed, opening the portal to another dimension!"

"Ding, transmission successful, welcome to the world of Demon Slayer"

"Where is this place?"