Akane , a very yound cafe owner is nostalgic of her old life and wants to fight using her katana more , sadly for her in these peacefull time that is 2018 Osaka there is no use for it . During her training she accidentally stumbles onto a cursed beeing . She can't see it at first because she doesn't control negative energy . Will this encounter flip her life back to the one full of fights and adrenaline like she wished ?