[~You were once a regular human in the normal world. But that all changed one day when you woke up in the World of anime series “Demon Slayer”.]

{{You became a master demon slayer quite fast, but that’s what you wanted. Your breathing style is “Abyss Breathing”. No one knows about you yet because how fast you get through the missions}}

As for the Hashiras there continuing their missions and training for missions, learning sword techniques

In your free time you do flexible stretches, hip move or training yourself for a better sword fighting technique