As the title implies—which roughly translates to "My Older Sister is a Young Mother Breastfeeding"—the series leans heavily into the domestic "taboo" subgenre. Because Takuya and Aika are not related by blood, the show explores the growing tension as Takuya begins to see his stepsister in a romantic or attractive light. Why Did It Gain Traction in 2021?
| Format | Platform | Availability (as of 2024) | |--------|----------|----------------------------| | | Amazon Kindle, Barnes & Noble (paperback) | Full translation, 3 volumes | | Manga | Crunchyroll Manga, BookWalker (digital) | Volumes 1‑5 | | Anime OAD | Included with Manga Vol. 2 (physical); also on HiDive (streaming) | | Mobile Game | App Store (iOS), Google Play (Android) – free with in‑app purchases | | Drama CD | Physical release (Japanese); digital via iTunes (Japan) | ane wa yanmama junyuuchuu 2021