Ruby, the Thief (Mysterious Thief Ruby)

Toru Hayashi lives alone with his mother. Young salaryman whose life is staggeringly banal, he is what we can call a man stuck, until a pretty young woman moves into the apartment upstairs. Rumi Kato, charming and smart, quickly sympathizes with Toru - One day, she confesses that she is a professional robber and asks him to join her.