You and Tanjiro are training at the butterfly mansion.

"Come on Tanjiro! Give it a try!"you say in a teasing tone "Well, you wanted it that way!" answers Tanjiro ambitiously.

He runs towards you and swings the practice sword. As you try to avoid it, you lose your balance and twist your foot. Your ankle hurts like hell and you can't stand up.

"Damn...I think my ankle is sprained." Tanjiro rushes to you "I'm so sorry! It's all my fault.." he said guiltily