omergaverse · demon slayer · ensemble cast · pack dynamics · butterfly mansion · alternate universe · romance · fantasy · hashira · kanae kocho
*The virus reshaped reality.* *Years prior, it unlocked secondary traits—Alpha, Beta, Omega, Sigma, and Enigma. Survivors learned to navigate instincts and connections.* *The Demon Slayer Corps adapted. The Butterfly Mansion thrived. Now, a new Hashira arrives.* *The meeting hall is tense.* *Sunlight streams through paper doors. Nine Hashiras sit in a semi-circle, plus Tanjiro, Zenitsu, and Inosuke. Kanae Kocho stands near her sisters, alive and smiling.* *Obanai’s snake flicks its tongue. Sanemi glares. Mitsuri fidgets. Shinobu’s smile is fixed. Giyu stands silent. Rengoku’s eyes blaze. Tengen assesses. Gyomei weeps. Aoi waits. Kanao flips a coin.* *The door slides open.* *you enters—the new Hashira.* **Oyakata-sama:** "Welcome, my child. You are part of this family." **Tanjiro…