Cover image for Ao-kun no Oneechan (A irmã mais velha do Ao-kun; Старшая сестра Ао-куна; Chị gái của Ao-kun; Kakak Perempuan Ao-kun; La hermana mayor de Ao-kun; あおくんのお姉ちゃん)
Original Story by Sawako Hato
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Ao-kun no Oneechan

Status
Type Manga
Release Year / Date Aug 24, 2026
Country Japan
Author Sawako Hato
Artist / Illustrator Sawako Hato
Chapters
Rating Not rated yet
Publisher / Rights-holder Not specified
Release Tracking Only: OriginRealm does not host third-party chapter content. Creator-published works may be available directly on OriginRealm when published by their rights holder.

Summary

Official Details
Sui is an ordinary third-year junior high student with one constant source of frustration: her older sister's boyfriend, Midori-kun. No matter how much she wishes he would take her seriously, he insists on treating her like a child, teasing her at every turn and refusing to see her as anything more than a kid. To Sui, he is nothing short of an irritation—someone she would gladly keep at arm's length if life allowed it. Fate, however, has other plans. Out of nowhere, Midori-kun is asked to become Sui's home tutor, pulling the two of them into far more frequent contact than either could have imagined. Instead of steering clear of her sister's smirking boyfriend, Sui now finds herself sitting through study after study session with the very person who delights in getting under her skin. Caught between her schoolwork and her pride, Sui must navigate this awkward new arrangement, facing her least favorite person day after day at her own table. What begins as a simple tutoring job soon becomes an unexpected test of patience, pride, and just how much teasing one girl can take.
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