On the official Twitter account for the anime adaptation of the manga written and illustrated by Yui Hara, Kiniro Mosaic, a promotional image was published for the next film in the franchise, to be titled Kiniro Mosaic: Thank You !!. However, a release date for this feature has yet to be revealed.
Hara began publishing the manga in Houbunsha Publishing's Manga Time magazine Kirara Max in June 2010 and completed it in March this year. A new manga titled Kiniro Mosaic Best Wishes began publication in May.
The play inspired an anime adaptation by Studio Gokumi released in July 2013, followed by a second season released in April 2015.
Kiniro Mosaic Synopsis
Shinobu Omiya is a high school student who, five years ago, spent a stay in England with a girl named Alice Cartelet. One day Shinobu receives a letter from Alice telling her that he will move to Japan to live with her.
Alice arrives and quickly joins Shinobu's group of friends, which includes Aya Komichi and Yoko Inokuma, at her school. But Alice did not come alone, and it is that her friend Karen Kujo accompanied her.
Source: Comic Natalie
(c) 原 悠 衣 ・ 芳 文 社 / 劇場版 き ん い ろ モ ザ イ ク Thank you !! 製作 委員会