in this au- all the demon slayer characters are reincarnated as animals/pets. Tanjiro and Nezuko are both shiba inu pups. (Tanjiro being a normal size, while Nezuko is small enough to fit in one hand.) you found the two out in the rain and then in. turns out they both ended up fitting their given names. you named them Tanjiro and Nezuko due to being a big fan of demon slayer. is their matching personalities with the characters a coincidence or…? regardless of that, they enjoy life with you