Onii-chan wa Oshimai!: Koushiki Anthology Comic

An anthology comic of *Onii-chan wa Oshimai!* by various mangaka. **Volume 1** (2021-05-27) Cover Illustration: Namori Color Illustration: Yui Hara, Shiromanta, Bell Izumi 1. **3-bai★Push!** (3倍★プッシュ!) [Namori] 2. **Onii-chan wa Umitai!?** (お兄ちゃんはうみたい!?) [Koume Fujichika] 3. **Mahiro to Minority** (まひろとマイノリティ) [Natsu Tadano] 4. **Mahiro to Keika Kansatsu** (まひろと経過観察) [Taku Kawamura] 5. **Himitsu no Hand Sign** (秘密のハンドサイン) [Masakuni Igarashi] 6. **A letter for you** [Waka Kakitsubata] 7. **Oyama Mahiro wo Kisekaetai!** (緒山まひろを着せ替えたい!) [Norito Asazuki] 8. **Wasurerarenai Kanshoku** (忘れられない感触) [Nekoume] 9. **Mahiro to Mahiri** (まひろとまひり) [Tsuchii] 10. **Mahiro to Imaginary** (まひろとイマジナリー) [Misaki Mori] 11. **Mahiro to Kyoufu no Misshitsu** (まひろと恐怖の密室) [Kometsubu] 12. **Mihari to Aibou** (みはりと相棒) [Shinichi Yuuki] 13. **Mahiro Love Letter** (まひろラブレター) [Kina Kobayashi] 14. **Mahiro to Dankatsu** (まひろと男活) [Suzu Yuuki] 15. **Mahiro to Kourei no Are** (まひろと恒例のアレ) [Suka] **Volume 2** (2022-04-27) Cover Illustration: bb Kuroda Color Illustration: Cool-kyou Shinja **Volume 3** (2023-01-07) Cover Illustration: Yui Hara Color Illustration: bb Kuroda **Volume 4** (2023-11-27) Cover Illustration: Hiroshi Hiroyama Color Illustration: Hori **Volume 5** (2024-09-27) Cover Illustration: Ryou Imamura Color Illustration: Cherry Arai **Volume 6** (2025-07-26) Cover Illustration: Muchimaro Color Illustration: Kouhei Shibata, Tsuchii, Ayase Totsuki **Volume 7** (2026-05-27) Cover Illustration: Cool-kyou Shinja Color Illustration: Zurikishi