Demon Slayer: The Snow Has Started Falling

A pillar stands tall and firm; a bowstring snaps and is replaced.

The eldest daughter of the Yozakura family, Yozakura Yuzu, should have lived a peaceful and comfortable life. But unable to stomach the demons' cruelty and depravity, she pushed herself to the limit, honing her skills and slaying demons at every turn...

"Don't worry, Nezuko. I'll protect you, Tanjiro, and the others."

Nezuko/Tanjiro pairing. If you don't like it, don't read.