Sumiiri Osananajimi no Sokubaku ga Tsurai

Overview

Nanase, in her first year of working, felt troubled by her childhood friend Rui; a tattoo artist who is very clingy. He worries too much, gets overprotective… and is just plain restrictive! The two have been living together for five years, but they were not lovers. Nanase likes Rui, but for various reasons, she hasn't been able to tell him how she really feels. One day, Nanase learned that the manager of the shop where Rui works, whom he respected greatly, is a woman. Nanase decided to visit her at work, out of curiosity, but…? (Source: Bunkasha, translated)

Source: AniList