is the eleventh studio album by Japanese girl group Morning Musume. The album was released on December 1, 2010, in a normal and limited edition, the first press of the normal edition coming with a photocard, and the limited edition coming with a bonus DVD (containing solo shots of each member for the "Onna to Otoko no Lullaby Game" PV, and the graduation announcement) and a different cover. The album, their second album release in less than a year, was the last to feature sixth-generation member Eri Kamei and eighth-generation members Junjun and Linlin prior to their December 15 graduation. Writing and development The album's concept, as stated by writer and producer Tsunku, is "a mixture of fantasy and reality". The album's songs represent various genres, from rock and pop to Motown. The opening song, "Onna to Otoko no Lullaby Game", is described as the "prologue" to the album. The album features two solos: "Ai no Honō", performed by Reina Tanaka, and "Denwa de ne", performed by Ai Takahashi. While these are the only solos, other members are allocated main vocals on some songs: Sayumi Michishige on "Fantasy ga Hajimaru", Risa Niigaki on "Onna Gokoro to Nan to Yara", and Eri Kamei on "Itoshiku Kurushii Kono Yoru ni". Similarly to the group's previous album, 10 My Me, the eighth generation, Aika Mitsui, Junjun and Linlin are heavily featured on the same track: track 7, "Sungoi My Birthday". Ai Takahashi and Eri Kamei provide almost all of the chorus vocals on the album; Kamei is featured in the chorus of all but two songs, Tanaka and Takahashi's solos, and Takahashi is featured on all songs except tracks 5 and 9. Producer Tsunku also appears in the chorus for track 2, "Bravo!". Singles The album only features two singles, a rarity for the group. It also does not include "Appare Kaiten Zushi!", a promotional song released under the name "Muten Musume". The first single from the album, "Onna to Otoko no Lullaby Game", was released on November 27, 2010 as the group's 44th single. Although it was a graduation single it charted relatively poorly, peaking at #6 on the Oricon singles chart, despite a reported total of 42,405 copies in its first week. The second and final single to be featured on the album, "Seishun Collection", was released on June 6, 2010. The single, their 43rd, reached a weekly peak of #3