Kareshi wa Doberman

Hitomi promises to return to her dog, Kuro, before leaving. A hundred years later, Mitsuko, whose parents are divorced, is taken in by her teacher after her mother fails to collect her. Mitsuko and her friends visit a reportedly haunted mansion, where a black dog attacks them. When it nearly bites Mitsuko, it instead cuddles her and leads her to a portrait of a woman who looks like her. The dog then transforms into a bare-chested, attractive man and embraces her. Mitsuko must decide between the loyalty and charm of Kuro or the dependable support of her teacher.