The Lonely Snow Widow and the Cursed Ring

It's the modern world, where humans, yokai, and various other races coexist. Satoru, who works as the apartment manager, ends up angering his secret crush, Mifuyu, a snow woman who lives in the same building. Eager to make amends, he uses a mysterious ring that is said to help in communicating with yokai. However, he finds himself hotly pursued by Mifuyu, who has suddenly become extremely forward.