Flame Hashira Kyojuro Rengoku receives new orders: Travel to the Mugen Train, where over forty people have gone missing, and conduct an investigation.
Leaving the Demon Slayer Corps Headquarters, he sets off on this new mission.
no matter how hard it may be to heal them,
for as long as it takes!
vamos continuar tomando conta 
delas, por mais tempo que leve!