Sumi-iri Osananajimi no Sokubaku ga Tsurai墨入り幼なじみの束縛がツライ; The Restrictions of My Tattooed Childhood Friend Are Harsh; Tatoueur irrésistible; Связанные чернилами; 문신 소꿉친구의 속박이 곤란해; 浑身都是刺青的青梅竹马控制欲超强

Nanase, in her first year of working, is troubled by her childhood friend Rui; a tattoo artist who is very restraining. Hes worrisome, overprotective and just plain restrictive! The two have been living together for five years, but they are not lovers. Nanase loves Rui, but for some reason, she cant tell him how she really feels. One day, Nanase learns that the manager of the shop where Rui works, whom she respects, is a woman. She decides to visit her at work, out of curiosity, but?