After a recent break-up with her long term boyfriend, Ayumu Naruse, not yet thirsty, is rundown from overwork and a broken heart. Oneday, she returns home late to find a handsome stranger in her apartment! Clad in a black tailcoat, he says " welcome home, master," as if it were the most natural thing ever. After applying online to be a tester for a new cleaning service for working women, Ayumu is shocked to find that she's been selected and what's more, a young man a butler - has shown up for work. His many skills even extend to full -body massages to take away the days stress and his touch is more than just relaxing