est. Rough estimate based on volume count, reprints and magazine — not an official figure
Overview
"Can't... keep my... voice down." Nii-chan thrusting in me again and again. We shouldn't be doing this as siblings... so, why does it feel this good...? (Source: Coolmic) Volume 1: Overflow: Iretara Afureru Shimai no Kimochi (おーばーふろぉ〜挿れたら溢れる姉妹のキモチ〜) Volume 2: Overflow: Toaru Kyoudai no Kindan Seikou (おーばーふろぉ〜とある兄妹の禁断性交〜) Volume 3: Overflow: Atsuku Majiwaru Shimai no Taboo (おーばーふろぉ〜熱く交わる姉妹のタブー〜) Volume 4: Overflow: Nagisa ni Matsuwaru Shimai no Fushidara (おーばーふろぉ～渚にまつわる姉妹のふしだら～) Volume 5: Overflow: Uzuku Shimai to Higawari Seikou (おーばーふろぉ ～疼く姉妹と日替わり性交～) Volume 6: Overflow: Nozoku Shimai no Seiai Jijou (おーばーふろぉ～覗く姉妹の性愛事情～) Volume 7: Overflow: Cos Shimai no Sakusei Yokkyuu (おーばーふろぉ～コスる姉妹の搾精欲求～) Notes: - Originally serialized as a web manga under the title Jitsu wa Ima Haittemasu....: Ofuro de Onii-chan no Katai Are ga... (実は今入ってます…。お風呂でお兄ちゃんの硬いアレが…っ). - Simultaneously released in long-strip format for mobile reading with each chapter split into 3 ‘episodes’.
Source: AniList
Synopsis 日本語
実家を出て一人暮らし中の大学生・和志のもとに入り浸る彩音と琴音の姉妹は、ふと3人で風呂に入ったことがきっかけとなって理性のタガが外れ、肉体関係に発展してしまう。
Source: Wikipedia「おーばーふろぉ」 (CC BY-SA 4.0)
External databases: Wikidata · AniList
How to compare editions, collected volumes and ISBNs / Sources, updates and corrections
Volumes
occupai First edition
6vols · 2021-01〜2026-01
| # | Release | ISBN | Buy | Price | Pages |
|---|---|---|---|---|---|
| Vol. 3 | 2021-01 | 9784434281686 | Rakuten · Amazon PR | 1,000 JPY | |
| Vol. 4 | 2022-03 | 9784434297885 | Rakuten · Amazon PR | 1,000 JPY | |
| Vol. 5 | 2023-01 | 9784434310515 | Rakuten · Amazon PR | 1,000 JPY | |
| Vol. 6 | 2024-01 | 9784434328022 | Rakuten · Amazon PR | 1,100 JPY | |
| Vol. 7 | 2025-01-10 | 9784434347481 | Rakuten · Amazon PR | 1,200 JPY | |
| Vol. 8 | 2026-01-09 | 9784434366871 | Rakuten · Amazon PR | 1,200 JPY |