Kamisawa can see and cut the strings of fate that bind people, including the red string of fate, but he has none of his own. When he helps client Hara get rid of a stalker, Hara falls for Kamisawa, but Kamisawa will only be sex friends since those he's loved in the past have invariably found their soulmate while with him. But Hara's gentle love slowly breaks down Kamisawa's walls until he has no choice but to run away or give in and accept Hara. Includes a sequel story in which they live together. The characters are beautiful and the story is unique and compelling, so this one is one of my favorites. Trigger warning: lying.
Kanawanu Koi no Musubikata