ハレとモノノケ (Series) favorite_border

"You're carrying an impurity."

One day, high schooler Yashio is suddenly told this by Toki, a man who claims to be an immortal mononoke. Under the pretense of purifying Yashio's impurity, the two begin an odd cohabitation. Although Toki constantly teases him with his words and actions, Yashio becomes drawn to him as he catches glimpses of Toki's loneliness.

However, Yashio eventually learns that Toki has someone he loves...

(Translator: ChatGPT (with edits))