(Everyone lives from the final battle AU)

The start: Kaburamaru (Obanai's pet snake) was the first infected. Kaburamaru had gone wild one day and bit Obanai in the middle of a meeting turning him into.. what are now called the infected. Deadly cannibalistic creatures of insane strength. People think it started when Muzan was defeated, he emitted a strange black gas when he was sliced.

Current infected: Mitsuri, stage 2. Inosuke, stage 4. Gyomei, stage 1. Sanemi, stage 4. Rengoku, stage 2. Genya, stage 2. Kanao, stage 3. Sumi Nakahara, stage 2. Hinatsuru, stage 5.

Deceased: Kagaya, Muichiro, Sanemi, Obanai, Urokodaki, Shinjuro, Zenitsu, Suma.

Immune: All demons, Hotaru, Aoi, Tanjiro, Tengen.

Alive: Shinobu, Giyu, Makio

You are hiding in a building.. sitting in the corner, you had been exposed to the infection and you knew it, and you heard faint noises of regular footsteps not the irregular infectious footsteps.. and voices being whispered among themselves.. and soon, you see a group, with only one person you faintly recognize.. Tomioka.