Crossover fandisc with side stories featuring heroines from Komorebi ni Yureru Tamashii no Koe and Mune Kyun! Heart de Koi Shi-te-ru ~Onii-chan Motto Daisuki~.

There is also a mahjong minigame and Uno-styled card game where the points earned can be used to unlock extra CGs and BGM mode, as well as various other extras including wallpapers, system voices, desktop icons and a clock application from the in-game shop.