Kuroda Kaede Alias Sebastian spends his days as the butler for Sugasaki Trade Holdings, Japan's foremost trading company. His main source of frustration is the only heir of the Sugasaki group, his young master, the hikikomori gamer, Tominosuke Sugasaki. Despite knowing that such a hikikomori way of life is unacceptable, Sebastian continues to indulge and pamper his adorable young master.

One day, Sebastian received a summons from the master and found himself cast out to the streets alongside Tominosuke, with the parting instruction, "Do not return until you have made 1 million yen"......?!?!