Imouto sae Ireba Ii. (ONA)
Japanese title: 妹さえいればいい。
Type: ONA
Source: Light novel
Episodes: 6
Status: Finished Airing
Aired: Oct 8, 2017 to Dec 10, 2017
Duration: 2 min per ep
Rating: PG-13 - Teens 13 or older
Studios: SILVER LINK.
Genres: Comedy

Original "chibi" styled animations of Imouto sae Ireba Ii. posted on the anime's official Twitter channel. Also included on the BD/DVD releases.