11x16 - Kamen Rider

The Misugi household's new housekeeper, Aki Sakaki, is confronted by Ryo Ashihara because her name is in his father's notebook. Unfortunately for Ryo she claims she knows nothing, but he doesn't believe her and follows her. After becoming closer to Shouichi and Taichi, Aki becomes the target of an Unknown... and Mana's wrath.