Ayakashi Tsukai no Yome Sagashi

From xiaojiangworld:

Ryuuichirou moved to the countryside in order to attend university and gets attacked by the handsome landlord, Akon Tenkawa. Akon says he’s been searching centuries for Ryuuchirou and that they used to be lovers. Ryuuichirou has no memories of their past lives and naturally refuses Akon’s advances and yet his heart…!

Also contains the obsessive love story of Eika, the fox servant of Akon and the mountain god, Mamoru!