1 Season 1 Episode Naisho No Wakana San - Season 1 (2013) Wakana, a friend of the family, an older Sister onee-san archetype, attends a funeral with her much older husband of 15 years. That night, she has a liaison with the son of the family who is a younger man studying for his college entrance exams. Country : Japan Genre : Studio : Director : Cast : AKKO