Merman in My Tub Season 1 Episode 4 The Circumstances of Wakasa's Friends: Mikuni Edition ( Air Date 2014-10-27 ) Genre Animation, Comedy, Sci-Fi & Fantasy category. Overview "Tatsumi informs Wakasa and Takasu of a rumor about a ghost appearing in a nearby park. Behind Tatsumi, a mysterious white object appears... The white shadow tells a surprised Tatsumi, "Nice to meet you. My name is Mikuni."".