An sequel to Sekachu and a Visual Novel which the player takes the role of Shiratori Aira, a girl who is quiet and shy. An Astroid suddenly crashed nearly Aira and it was R-ne, a cat-eared girl, who wants to live with her and meets Shino Akune, Kumiko Kirishima and Keiji Osaki and it begins...The Opening Theme " Floating up " will be sung by Kotoko. The Ending Theme " History " will be sung by marina.