Contains multiple stories written by different artists. 1. Doku to Sex (毒とセックス) by Harada 2. Toile no Nekomiya-kun (トイレの猫宮くん) by YAMAMOTO Ataru 3. Cyan to Yellow (シアンとイエロー) by NARASHIMA Sachi 4. Love Milky! ~Nyuugyuu Yuki no Shiboritate Shiiku Nikki~ (ラブミルキー！ ～乳牛ユキのしぼりたて飼育日記～) by Yao 5. Dorei Izonshou (奴隷依存症) by SHIROMITSU Daiya 6. Adam to Lilith + Satan (アダムトリリス＋サタン) by NAGI Wataru 7. Monster Throne (Gyokuza no Kaibutsu / 玉座の怪物) by OGAWA Chise 8. sprout by ABE Akane 9. Kemonotachi no In'en (獣たちの淫宴～Animal XXX Club～) by NANGOKU Banana 10. Pulau Senki (プラウ戦記) by IKE Reibun 11. Private Libido (プライベート・リビドー) by AIBA Kyouko 12. Dogma (ドグマ) by akabeko

A sole omega was born into an alpha family. They hid him away and raised him in secret, ashamed of his existence. Chikage (omega) is named heir of the Souma clan after his older sister ran away. The first omega to be the leader of an alpha-only clan. Hiroto (alpha) met Chikage once when they were both kids. They met again when Hiroto is chosen to take care of Chikage at school. But he's nothing like the sweet child who clung to him before, Chikage now has a cold attitude but a slutty body… and wants nothing to do Hiroto?!

Volume 1 (2012/6/25) #Cover illustration: Aniya Yuiji 1. Toyed. by Aniya Yuiji 2. Love or Kick! by Mineshima Nawako 3. Jyoukyou Monogatari (ジョーキョー物語) by Nimoda Ai 4. Boku wa Anata ni Koi wo Suru (僕はあなたに恋をする) by Ichikawa Kei 5. Red Hot Sweet by Yamane Musashi 6. Ohirusagari no Hana no Kimi (御昼下がりの華の君) by SANKAKUSHA Pie 7. Koosuke-san, Zenra de Taiki! no Maki (コースケさん、全裸de待機!の巻) by Yamawomi 8. Sono Uso wa Kuchihodo ni Shinijitsu wo (その嘘は口ほどに真実を) by Yuki Ringo 9. Aotenjou no Killing Joke (青天井のキリング・ジョーク) by ISONO Funa 10. Kimishigure (キミシグレ) by Jaryuu Dokuro 11. Chronic (クロニック) by Kashio Volume 2: "Erotoro R18" (エロとろ R18; 2013/6/28) #Cover illustration: Aniya Yuiji 1. Sweet♡Sweat♡Monkey by Aniya Yuiji 2. Saigo no Hito (最後のひと) by Psyche Delico A subordinate who’s crazy about virgins takes his boss’s first time. 3. Saiminjutsu Nyuumon (催眠術入門) by Kashio 4. Kaze no Sukima (風の隙間) by Ichikawa Kei 5. Three Piece! by Nimoda Ai 6. Ore, Higaisha (おれ、被喜者) by Kimura Hidesato 7. Oh My Chubby,baby! by Mineshima Nawako 8. Tenshiban no Ue (展翅板の上) by SATO Nishi 9. Sickly by Yamane Musashi 10. Help? by Yashiko 11. Henai (変愛) by Harada Volume 3: "Erotoro R18 ver.SS" (エロとろ R18 ver.SS; 2014/8/9) #Cover illustration: Aniya Yuiji 1. Fuuzokugurui deshita ga Toshishita Gakusei no Koibito ga Dekimashita (風俗狂いでしたが年下学生の恋人ができました) by Psyche Delico 2. Nurui Otoko (ヌルイ男) by Aniya Yuiji 3. 7-ji 32-pun 7-ryoume no Kimi (七時三十二分七両目の君) by Kashio 4. Henai: Maotokohen (変愛 間男変) by Harada 5. Kairaku Loop (快楽ループ) by YAMANE Musashi 6. S dakara tte Namenna yo! (Sだからってなめんなよ!) by Nimoda Ai 7. Koroshiya no Takaragai (殺し屋の宝貝) by NATORI Isato 8. Koi to wa Kinaru Mono (恋とは奇なるもの) by Mineshima Nawako 9. Kajima-kun no Shiranai Nichijou (鹿島くんの知らない日常) by Kimura Hidesato 10. Live by YASHIKI Eigo 11. Namae sae Iwanai (名前さえ言わない) byOKADA Kou 12. Furueru Mune no. (ふるえるむねの。) by COCONOE Ricoco 13. 24-jikan Ireppanashi Practice (24時間挿れっぱなしプラクティス) Purugaria 14. Ikujinashi no Spectator (いくじなしのスペクテイター) by YAMAMOTO Ataru 15. Kanojo nano ni Otoko (彼女なのに男) by Inutoki & Syohei 16. Kiyoku Tadashiku Kashikou Renai! (清く正しく賢く恋愛!) by Yashiko Volume 4: "Erotoro R18: Hatsukoi" (エロとろ R18 ～初恋～; 2015/6/10) #Cover illustration: Aniya Yuiji 1. Abenobashi hai ro no Jinrui (あべの橋、灰色の人類) (The Gray Humanity of Abenobashi) by Kimura Hidesato Story of a guy doing lil yakuza jobs and his chance meeting with a guy named Megumi. 2. Tonari ni Sunderu Neko no Koto (隣に住んでる猫のこと) by Psyche Delico 3. Ezaki Shounen no Yuuutsu (江崎少年の憂鬱) by Kashio 4. First Love? wo Mouichido (ファーストラブ?をもう一度) by Yamawomi 5. 0-ten Manten (0点満点) by Emao 6. Sen wo Kaku (線を書く) by SAKAMOTO Aki 7. Boku wa Ninkimono (ボクは人気者) by Inutoki & Syohei Prequel to a story in Ringo, Ki kara Ochiru 8. Koi ni Ochite Gomennasai (恋におちてごめんなさい) (Sorry for Falling in Love) by Aniya Yuiji 9. Afureru Moreru (あふれる漏れる) by Yashiko 10. Chigireta Te no Naka (ちぎれたてのなか) by COCONOE Ricoco 11. Suimenka (スイメンカ) by Harada

1: Rara no Kekkon – Tamekou 2: Nemuri Otoko to Koi Otoko – Zaria 3: Caste Heaven – Ogawa Chise 4: Doushite Sensei ni Natta no – Syundei 5: Heart no Choker – Yamamoto Ataru 6: Mesuiki ❤︎ Kenkoushinda – Dan 7: Fasshon'efu – Matsuda Usachiko 8: Sense Of Loyalty – Matsumoto Yoh 9: Josou Shitara Ikemen Yuujin-tachi ni Oishiku Itadaka Remashita – Maruki Bunge & Kasai Rikako 10: Control – Ebun 11: Teikoku no Kangan: Migi Gen Ouji Denka no Yometori – Hino Akira

1.) OGAWA Chise - Caste Heaven Bangaihen Special story from Caste Heaven, features two of the side characters. 2.) SHIMURA Takako -「卒業」 3.) Hideyoshico - Requirements for Being Trash This installment features some backstory for Koizumi (Gesu BL) and some "trash" guy. 4.) YAMAMOTO Ataru -「律くん、ボクはね」 5.) TSUYUKI Yuruco -「ENDLESS WELCOME BACK」 6.) kanipan -「答え合わせ」 7.) Purugaria - 「西園寺先生」 8.) Niyama -「愛はかえるか」

1: Mizuki Tama –『両片想いトラップ』 2: Serizawa Nae –『恋の奏』 3: Asakura Kamui –『図書室の秘め事』 4: Kouki. –『せいしゅんの塔』 5: Kuju Siam –『クロスポイント』 6: Ootsuki Kurumi –『不本意喧嘩番長たちの憂鬱』 7: Sasaki Ima & Takase Roku –『青春レミニッセンス』 8: Ibarame Hisa –『ロストランド・スクール』 Essays by: Kashima Chiaki Monchi Kaori Yamamoto Ataru

Extra story featuring Soutarou and Meguru from the first story of Nise x Koi Boyfriend.