Aimer is going to release a new single, titled "茜さす / everlasting snow" (Akane Sasu / everlasting snow). The song is going to be featured as the first ending song of a new Fall 2016 anime, "夏目友人帳 伍" (Natsume Yuujinchou Go). The anime is the fifth season of an adaptation based on the manga with same title by Midorikawa Yuki.

Track list of the new single:
01. 茜さす (Akane Sasu / glowing red)
02. everlasting snow
03. カタオモイ（5th Anniversary Live ver.） (Kataomoi / unrequited love)
04. 茜さす（TV size）
05. 茜さす（instrumental）
06. everlasting snow（instrumental）

Original news article @ natalie.mu