Winter ends, spring arrives, and our protagonists take a new step forward. Haruto announces a new series. Miyako joins Branch Hill Publishing to finally become a professional editor. Chihiro becomes the life of her university’s TRPG club. Finally, a 100,000-character love letter inspires Itsuki to pour more energy into his novel and become a genuine protagonist. A new everyday life dawns as the series enters the first half of its final chapter!
Learn more about the series. Hover the bolded text for more information.| Story and Art by | Yomi Hirasaka, Kantoku | 
| Series Page | A Sister's All You Need | 
| Romaji Title | Imouto Sae Ireba Ii. | 
| Japanese Title | 妹さえいればいい。 | 
| Prequel Series | N/A | 
| Reading Order | This is the thirteenth volume. Read volume 1-12 first. | 
| Status | Completed | 
| Genres | Comedy, Ecchi, Gender Bender, Romance, School Life | 
| Demographic | Seinen | 
| Japanese Publisher | Shogakukan | 
| Series Links | MangaUpdates, MyAnimeList | 
Product Description
Learn more about this volume. Hover the bolded text for more information.| Volume | Single, 13 | 
| Chapters Included | |
| ISBN-13 | |
| Release Date | September 20, 2022 | 
| Format | Trade Paperback | 
| Trim Size | 5.70" x 8.10" [Larger Trim] | 
| Book Price | $ 15.00 | 
| Pages | 224 | 
| Age Rating | Older Teen | 
| English Publisher | Yen Press | 
| Imprint | Yen On | 
Book Staff
Thank the staff for their hard work in producing this manga. Hover the bolded text for more information.| Translation | Kevin Gifford | 
Anime
This series has an anime adaptation!| Romaji Title | Imouto sae Ireba Ii. | 
| Japanese Title | 妹さえいればいい。 | 
| Format | TV Anime | 
| Aired | Fall 2017 | 
| Studio | SILVER LINK. | 
| Links | MyAnimeList, Anilist | 
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