@@user-jm6wg2jk1bno hate but the name is demon slayer, and yes I have watched it. Hinokami Kagura is a breathing technique used by the father of Tanjiro Kamado😊
There are few factors that matter how good katana slices : 1. Sharpness ( the most known reason ) 2. Katana's curve ( this matters how it will slice ) 3. Hardness of katana ( some soft katanas can bend but hard ones won't ) 4. How strong user is ( matters on strong objects like 7 tatami mats ) 5. How fast katana is swinged ( the faster the better ) 6. Skill ( the better you know katana the better )
you were holding the katana wrong for example if you see the samurai holding it above his shoulder and it's being held slightly curved downwards is how you should hold it. (no hate btw)