Kabu was told by his father, that he is going to succeed the Umezaki group, but he is hesitant to do so. On the other hand, Sagawa, who is regarded as the successor of the group by everyone else, tests Kabu’s loyalty by giving him an ultimatum, to give up his company or Nirasawa. For Kabu, Nirasawa is not only a convenient pawn, but at the same time he’s a lover, that has captivated him with his unexpected cuteness. Will Kabu really send Nirasawa away…!? 
This story takes place 4 years after the events of Bi no Isu.

Kabu has finally succeeded his father, but with Shao Chen still alive and out to destroy the Umezaki group, the situation around Nirasawa and Kabu is heating up.
 
Note: chapter count includes an extra

1. Bi no Isu (The Coercion Chair) 
Kabu and Nirasawa have a troubled relationship, to say the least. Harsh yakuza lifestyle, torture, and violent sex are everyday occurrences for the volatile couple. 
2-3. Anya no Tsubute 
Sequel to Bi no Isu. 
4. Tokage to Chutsugai 
Emiri is impotent, thanks to his trauma of being molested by his childhood friend, Fuyu. Years later, Emiri is finally seeking treatment for his condition, but why is Fuyu wearing that white coat?! And why is the nurse's skirt so short? 
5. Seiritsu Shinai Asa (The Morning That Will Never Happen) 
What will happen years later when senpai and kouhai meet again? Is loving someone that frightening?

PINK GOLD (2012/8/28) 
Cover illustration: Yamane Ayano 
1. A-senpai (A先輩) [Nakamura Asumiko] 
2. Razoku no Hanayome (裸族の花嫁) [Sera] 
3. The SHOW [Ike Reibun] 
4. Love Aroma Body: Extra Episode (LOVE?アロマ?BODY -Extra Episode-) [Minami Haruka] 
5. Taiiku Souko de Senpai to Kouhai ga Yatteru dake no Manga (体育倉庫で先輩と後輩がヤってるだけの漫画) [Takaku Shouko]
6. Mistress (ミストレス-愛人-) [Nitta Youka] 
7. Atenaki Tegami (宛なき手紙, Unknown Letters) [Narusaka Rin] 
8. Abakareru Yoru (暴かれる夜, A Revealing Night) [Sasamura Gou] 
9. Ibitsu na Kakera (いびつな欠片, Broken Pieces) [Ogawa Chise] 
10. Midnight Dog Show (ミッドナイトドッグショー) [Toriumi Youko] 
11. Sanran (産卵) [羽柴みず] 
12. Love is Blind (ラブ・イズ・ブラインド) [北野仁] 
13. Kinrou Buchou Takahane Akihito Barairo no Tashinami (勤労部長高羽秋仁の薔薇色のたしなみ) [Yamane Ayano]
 
PINK GOLD 2 (2013/7/28) 
Cover illustration: Nakamura Asumiko 
1. Rikashitsu (理科室, The Science Room) [Ike Reibun] 
2. Chuugaku 3-nensei (中学3年生, Middle School, Third Year) [Nakamura Asumiko] 
3. The Shasei 1: Shasei Moment Omnibus - "Manin Densha"-hen (The 射精 ① 射精モーメント・オムニバス「満員電車」編) [Sakira] 
4. Hatsujou Virus (発情ウイルス) [Tennouji Mio] 
5. Matsu Hana (待つ花, The Awaiting Flower) [Zaria Ranmaru] 
6. Long Vacation (ロングバケーション) [Hideyoshico] 
7. The Shasei 2: Shasei Moment Omnibus - "Koushuu Benjo"-hen (The 射精 ② 射精モーメント・オムニバス「公衆便所」編) [Sakira] 
8. Kusatta Rasen (くさった螺旋, Rotten Spiral) [Ogawa Chise] 
9. Naha 18-sai♂Mama ni Narimashita: Natsumatsuri-hen (那波18歳♂ママになりました-夏祭り編-) [一二三もげぞう] 
10. Mizugi na Kuchibiru (水着な唇) [Kamon Saeko] 
11. Kinbaku: Takaya-hen (緊縛-タカヤ編-) [Zaria Ranmaru] 
12. The Shasei 2: Shasei Moment Omnibus - "Gakkou de..."-hen (The 射精 ③ 射精モーメント・オムニバス「学校で...」編) [Sakira] 
13. Pays de Cocagne [Ishida Kaname] 
14. Himitsu (ひみつ) [Watanabe Asia] 
15. Kinbaku: Mamoru-hen (緊縛-マモル編-) [Zaria Ranmaru] 
16. Nureta Tsubomi ni Ochita Chou (濡れた蕾に堕ちた蝶) [Minami Haruka] 
17. Ookami-kun to Akazukin-san (オオカミくんと赤頭巾さん) [Sakurai Ryou] 
18. Kabemizushiri (壁水尻) [Kamon Saeko]
 
PINK GOLD 3 (2013/12/28) 
Cover illustration: Nekota Yonezou 
1. Aruhi no Houkago (ある日の放課後) [Nekota Yonezou] 
2. Nemuri Otoko to Koi Otoko (眠り男と恋男, A Sleeping Man and a Loving Man) [Zaria Ranmaru] 
3. Mop no Knight-sama (モップの騎士〈ナイト〉様) [Takewakamaru] 
4. Razoku no Hanayome: Razoku Mura wa Shigekiteki da yo Hen (裸族の花嫁～裸族村は刺激的だよ編～) [Sera] 
5. Kizukanu Shisen (気付かぬ視線, Unnoticeable Glance) [Kamishima Akira] 
6. Chikan ja Nai kara! (痴漢じゃないから！) [Nanase Hashi] (七瀬はし) 
7. Akanawa (赤縄) [Ike Reibun] 
8. Hitomi no Oku no Yokubou (瞳の奥の欲望) [yoshi] 
9. Omae to Ore to Koitsu☆ (お前と俺とコイツ☆) [Tamaquis Wren] 
10. Ore wa Kawaii Otouto to (オレはかわいい弟と) [Takaku Shouko] 
11. Kyoushitsu no Yugami (教室の歪み) [はらだ] 
12. Mizugi Kareshi: Shiri Chigai Hen (水着彼氏～尻ちがい編～) [Kamon Saeko] 
13. Hadaka no Boku (裸の僕) [Nakamura Asumiko]
 
PINK GOLD 4 (2014/2/28) 
Cover illustration: Yamane Ayano 
1. Karada x Karada Shintouatsu (カラダ×カラダ浸透圧) [Minami Haruka] 
2. Razoku no Hanayome (裸族の花嫁) [Sera] 
3. Otoko Benten Enbunroku (男弁天艶聞録) [Nitta Youka] 
4. Otameshi Are!(お試しあれ！) [Sakurai Ryou] 
5. Lesson A (レッスンA) [Machiya Hatoko] 
6. Pick Up (PICK UP) [Aiba Kyouko] 
7. Pau Lani (pau lani) [Ishida Kaname] 
8. Itsuka no Yume (いつかの夢) [Naono Bohra] 
9. Himitsu no Saimin Kyoushitsu (ヒミツの催眠教室) [Sakira] 
10. Dourou Cameraman Takabane Akihito no Love Monster Shuurai (動労カメラマン高羽秋仁のラブモンスター襲来) [Yamane Ayano] 
11. Tenkousei (転校生) [Nakamura Asumiko] 
12. Kimi ni iRetai (キミにィれたい) [Chitose Piyoko] 
13. -'S - Apostrophe Plus S (-'S アポシトローフィー・プラス・エス) [Hataoka] (端丘)
 
PINK GOLD 5 (2014/10/28) 
Cover illustration: Ike Reibun 
1. Bi no Kyoujin: X Side (媚の凶刃～X side～) [Ike Reibun] 
2. Pick Up (PICK UP) [Aiba Kyouko] 
3. Amai Hametsu (甘い破滅) [Fujisaki Kou] 
4. Hajimete no Gohoushi (初めてのご奉仕) [Yamamoto Nase] 
5. Dekichatta Danshi: 3P-hen (できちゃった男子～3P編～) [Mikage Tsubaki] 
6. Cache (Cache) [Ishida Kaname] 
7. Taiyou to Himitsu (太陽と秘密) [Zaria Ranmaru] 
8. Kiresasete Kudasai (挿れさせてください) [Hiiragi Mizuka] 
9. Nikoichi (ニコイチ) [Nakamura Asumiko] 
10. Razoku no Hanayome (裸族の花嫁) [Sera] 
11. Futago na Bokura ni Tsuite. (双子な僕らについて。) [Minami Haruka] 
12. Grand Guignol (グラン・ギニョール) [Motoni Modoru] 
13. Koroshiya no Pet (殺し屋のペット) [Haizaki Mejiro] 
14. Kalimeris Porno (カリメリス・ポルノ) [Hinako]
 
PINK GOLD 6 (2015/3/10) 
Cover illustration: Kano Shiuko 
1. Punch↑ Returns 2015 (Punch↑ RETURNS 2015) [Kano Shiuko] 
2. Ano Hi, Seifuku de (あの日、制服で, That Day, in the Uniform) [Nakamura Asumiko] 
3. Renai Houteishiki: Kannami x Manabe-hen [Koi no Kamisama] (恋愛方程式 神波 × 真鍋編 [恋の神様]) [Kodaka Kazuma] 
4. Mitsu ni Oboreta Sakana (蜜に溺れた魚) [Minami Haruka] 
5. Razoku no Hanayome: Bokutachi Konna Koto Hayarase Chaimashite-hen (裸族の花嫁 僕達こんな事流行らせちゃいました編) [Sera] 
6. Nemuri Otoko to Koi Otoko (眠り男と恋男) [Zaria Ranmaru] 
7. Kaibutsu no Hitosashi (怪物の一刺し) [Sakamoto Mano] 
8. Kuchinashi to Shiroi Oni (くちなしと白い鬼) [Haizaki Mejiro] (灰崎めじろ) 
9. Suki ni Tsuka tte (すきにつかって) [Hiiragi Mizuka] (柊みずか) 
10. Zenbu wo Yurushita Oboe wa Nai (全部をゆるした覚えはない) [Utaki Pinpon] (卯陀喜ぴんぽん) 
11. Pick Up (PICK UP) [Aiba Kyouko] 
12. Sex wo Suru to Nemuku Narimasu (セックスをすると眠くなります) [Fujio]

Includes: 
1-3. Bi no Kyoujin: X Side (3 parts + full color extra) 
Kobi no Kyoujin extra stories. First episode takes place 3 years after Nirasawa meet Kabu for the first time. 
4. Bi no Kyoujin: KOUKI Side 
5. Science room (Rikashitsu from Pink Gold 2) 
6. Akanawa (Pink Gold 3) 
7. Not equal - extra chapter

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