Tamon-san no Okashi na Tomodachi

Overview

Osaka, present day. Utsui, a high school senior, is raised in a queer family, in an environment where loving whomever you choose is more than accepted. She herself, however, struggles with her inability to experience romantic love. Among the people passing through her home, she becomes attached to Tamon, a strange person who is in the habit of conversing with supernatural beings that only they can see. In response to Utsui’s call, a mysterious little creature who is Tamon’s friend appears... but it has forgotten its own name.

Source: AniList