S0E1 - Chihiro's All You Need
Itsuki is frustrated after his manuscript gets rejected by his editor. He hangs out at home with Chihiro (his younger “brother”), Miyako, Nayuta, and Haruto. Light banter, comedic rejection & friendship moments.
Sept. 10, 2017, midnight
S0E2 - Nayuta's All You Need
Nayuta and Miyako reflect on how they met Itsuki and how their friendship developed. Some cute or comedic character build‑up.
Oct. 9, 2017, midnight
S0E3 - Miyako's All You Need
Itsuki travels for inspiration with Nayuta and Miyako, then is dragged along by some other friends (like illustrator Setsuna) to places like Okinawa, Hokkaido. Small adventure vibes.
Oct. 23, 2017, midnight
S0E4 - Haruto's All You Need
After work/manuscripts are submitted, the friends gather for a board game session. Itsuki reveals his feelings for Nayuta to Haruto (not knowing she heard). Ends with a reveal that one of his novels is going to be adapted into an anime.
Oct. 30, 2017, midnight
S0E5 - Kaiko's All You Need
Kaiko is introduced in the regular anime series during episode 6, "Having Your Media Developments Go Well Is All You Need." In this episode, Itsuki meets the refined manga artist to discuss his work, only to discover she shares his love for little sisters.
Dec. 3, 2017, midnight
S0E6 - Ashley's All You Need
The special features super-deformed, or chibi, versions of the characters in a two-minute episode.
Dec. 10, 2017, midnight
S0E7 - Toki's All You Need
The anime series itself is a comedy about a novelist, Itsuki Hashima, whose life is dominated by his obsession with "little sisters". The special episode likely focuses on one of the supporting characters, Toki.
Jan. 26, 2018, midnight
S0E8 - Setsuna's All You Need
The special episode focuses on the character Setsuna and is a short, 2-minute installment.
March 23, 2018, midnight