A young woman who has made a career out of assisting defunct manga rental shops auction off their wares hides a secret past. In a former life she was a go prodigy who began competing professionally at age 12. Then, for reasons not publicly known, she quit the professional go circuit.

One evening, a stranger shows up at her door asking to rent a room. The young man claims to be a former go professional, and, indeed, he is a remarkably talented player. As the two adjust to life together as roommates, they are surprised to find themselves healing from the burnout they experienced as elite players – but a far more unexpected outcome still awaits them.