𝗩𝗔𝗥𝗜𝗢𝗨𝗦 yandere : KNY x female reader. ❛I swore I would protect him. But who will protect me?❜ 𝗜𝗡 𝗪𝗛𝗜𝗖𝗛──You'd do anything to keep your brother safe in such a dangerous world ever since your parents passed. But you didn't expect to get into a fight with a demon and meet a demon slayer. Now, nothing will ever be the same again. Including, you. ✷ 𝗖𝗔𝗨𝗧𝗜𝗢𝗡 ／ Slight Au, some possible ooc & dark themes. ✷ 𝗣𝗨𝗕𝗟𝗜𝗦𝗛𝗘𝗗 ／ Tuesday May 19th 2026, 5:56 AM. ✷ 𝗦𝗧𝗔𝗧𝗨𝗦 ／ Ongoing.