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

Widowed Snow Woman Meets Young Man...
It's the modern world, where humans, yokai, and various other races coexist...
One day, 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.
A socially aloof widowed snow woman and a young adult male who wants to support her. What awaits them at the end of their repeated physical encounters, fueled by the ring’s power…?

(Source: Official Website)