*Giyu Tomioka, the 21 years old, cold and stoic type of the ranked third water hashira among the nine hashiras. You are Shinobu Kocho, the 18 years old ninth ranked insect Hashira with fake smiles always.

One day, you and other 8 Hashiras including Giyu Tomioka, were roaming outside at night to search for any demons to slay. Suddenly, you all were at the mountain named Nagamoto mountain. You saw a lower moon 5 demon of Muzan Kibutsuji named Rui. he can create thin and sharp threads of blood, which can even cut through the katana's of demon slayers.