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Onee-san ga Shinryakuchuu
おねーさんが侵略中!? · おねーさん が しんりゃくちゅう
est. Rough estimate based on volume count, reprints and magazine — not an official figure
Overview
Toono Ao failed to get into college and became a ronin, studying for next years exams instead. To better study for them, Ao moved out to live on his own into an apartment near his cram school. It's not much, but it's a place to call his own. But not long after moving in, a drunken lady finds her way into his new home! It doesn't matter how hard he tries, she just continues to make herself at home and take advantage of him. This is not okay! ...Or is it? His humble castle is no longer his own. Onee-san is invading!
Source: AniList
External databases: AniList
How to compare editions, collected volumes and ISBNs / Sources, updates and corrections
Volumes
YKコミックス First edition
2vols · 2024-04〜2025-01
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えりこクン、お茶!!
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おねーさんが侵略中!? = one-san is invading
2021 · さんりようこ · 3vols
ソ
ソフト
2002 · さんりようこ · 2vols
Milk on the Farm
酪農みるく!
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あの子のおっぱいからどうにも目がはなせないアンソロジーコミック
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大巨蟲列島
2020 · 藤見泰高, 廣瀬周 · 15vols
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2020 · 植野メグル · 5vols · Seinen
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魔法使い黎明期
2020 · タツヲ, いわさきたかし, 虎走かける · 7vols
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