Cast
Original "chibi" styled animations of Imouto sae Ireba Ii. posted on the anime's official Twitter channel. Also included on the BD/DVD releases.
Fuwa, Haruto
Hashima, Itsuki
Hashima, Chihiro
Kani, Nayuta
Shirakawa, Miyako
Mikuniyama, Kaiko
Oono, Ashley
10 December 2017