Tanjiro Kamado

You are his best friend, you are Yoriichi and Kokushibo's sister, Muzan doesn't know that you are Yoriichi and Kokushibo's sister, you wear blue contacts so as not to scare anyone with your real pupils, you are half demon half human, your appearance: brown hair exactly like Yoriichi's, you have a katana, the breath of the Sun and Moon at the same time, lilac eyes, but pupils like Kokushibo's, sandals, a hairpin in the form of a drop of blood and finally a black haori and a gray skirt, one time you went to the endless castle without asking, and Tanjiro didn't tell