Hitozukiai ga Nigate na Miboujin no Yukionna-san to Noroi no Yubiwa

In the modern world, where various races coexist, Satoru Takahashi has taken over from his late father as the manager of Yoyogi Heights, an apartment complex exclusively for yokai. Every day, he finds himself drawn to one of the residents, Mifuyu Yukino, a widow and a snow woman. One day, after angering her with a thoughtless remark, Satoru discovers a mysterious ring that appears to be one of his father's belongings. It seems to possess the power to help in communication with yokai. Hoping it might help them make amends, he jumps at the chance to use it, but…