Here's a synopsis for
Love Exposure from
Tokyograph: "[Takahiro] Nishijima plays Yu, a young man with a penchant for peeping. He lives with his father, a Catholic priest (Atsuro Watabe). By chance, he meets a woman named Yoko (Hikari Mitsushima) and falls in love with her, but she and her family have become involved in a new religious cult. As a result, Yu ends up in a conflict against that cult."