The manga centers around Ginjirou Manda, a loan shark business man who is affiliated with many Yakuza gangs in Osaka. He charges an interest rate called toichi — 10% more interest every 10 days, or 365% every year. Thanks to his unrelenting money-collecting tactics, he is feared as "Minami no Oni" or the "Demon" of Osaka's Minami business district. Even when his borrowers tries to scam him, he always finds a way to make them pay his money back. (Source: Anime News Network)

Tatsuya Shirakawa, also known as Hakuryu, is a man who has grown the Kurosu-gumi from a small organization to a large one and dominates the underground area of ​​Shibuya with his wit and action. A ruthless skill that doesn't choose any means. The courage to take a high-stakes gamble without hesitation. A hard-boiled comic depicting the powerful activities of the charismatic yakuza, Hakuryu! Kurosu and Hakuryu, who have fallen into a predicament due to the conflict with the Tenwakai, are trying to revive them...!?

The stage is the Tokyo district of Roppongi and the players are the various Yakuza gangs. One much smaller gang is audaciously trying to carve out territory for itself. That gang's boss relies heavily on his second in command, the notoriously shrewd and powerful young man with the nickname Hakuryu. With Hakuryu's guidance, their small gang of 40 members may be able to stand up to others with even 200 times their numbers. The gang geography of Roppongi is hotly contested, and it will take strength and strategy to get by in that dangerous world!

Anthology of doujinshi from different artists. \*\*Vol 1\*\* (2005) - Cover illustrator: SESSHOU Yone - Stories included: • 僕のバンビーナ by KOMAKURA Chiyori (newly drawn) • スウィート・ソウル・レビュー by Munta (newly drawn) • 魔境 by SONAE Guy (newly drawn) • PHOTOGRAPH by Tsukudani (newly drawn) • 特別な肩 by SOUREI Naruto (newly drawn) • ボスの条件 by LONDON Pariko (newly drawn) • ストップ！ ヒバリ君☆ 1・2・3 by HIRAMATSU Kazuyuki (newly drawn) • 学校ともだち ; 腕に書く ; 武寿司 by SESSHOU Yone • センチメンタルクライシス by SOMEYA Rui • まだ見ぬ君へ by 139 • 10年後のソナタ ; ☆キューピッド上司☆ ; ☆オベンキョウ☆ by cyao\*Tome • 獄寺君はやまとなでしこ ; そして日はまた昇る。 by ARISHI Jun • リボーンの手料理 by KITAMIMAKI Soune • エブリシング中学生 by Nyankichi • 10年前のぼくら ; 10年後のぼくら ; 山本武の嫁に来ないか ; 猿山とボク by IMAMOTO Jion • チャオボヴィーノ ; ツナ受難 ; おつかいランボ by Rikka • お約束デス ; ポリシー ; 仲良し家族 ; イメージ通り ; 姉弟ハーレム ; 初恋 by FURUBAYASHI Kitarou • LOVEさりげなく… ; 例えるなら ; 名前を呼ぶとか呼ばないとか by Nittama • 明日は何色 ; 仲裁編 by TOUDOU Yuuya • Slur by UEDA Aki • 掟 by 相模律 • ノンストップ京子ちゃん ; 続・ノンストップ京子ちゃん ; 続々・ノンストップ京子ちゃん by 相模律 • 甘い眩暈 by Reima • ★どこでも10年バズーカ★ by NAKAMURA Machiko \*\*Vol 2\*\* (2005) - Cover illustrator: SESSHOU Yone - Stories included: • さなっぴインパクト by SESSHOU Yone (newly drawn) • ☆のるか そるか！ by HIRAMATSU Kazuyuki (newly drawn) • ピンチがチャンス！ by SOMEYA Rui (newly drawn) • はじまりの合図 by TENNOUJI Mio • ハルの野望 by MOMO Ringo • In the last of sunny day by NAKAMURA Machiko • quarry by AKAZAKI Yuki (also included in \[Doujin Sakka Collection - AKASAKI Yuki\](https://www.mangaupdates.com/series.html?id=192671)) • 十代目と俺1･2 by 白木王武運 • たかが恋や愛 by KIRYUU Hinaki • アメとムチ？ ; 学ラン天国 ; 最新バズーカ by URUCHI Yonemaru • sympathy by Chizu • 背徳ロマネスク by Ichiroku • がっこうのおいしゃさん by SANSHI Shioko • プロポーズ大作戦 by KUROKI Rin • 第３者の目線1・2 by Nabe • リプレイリプレイ by ICHIMATSU Kinuko • それぞれの想い ; その答え　山本編・獄寺編 ; しあわせファミリー計画 ; 続・しあわせファミリー計画 by KOBAYASHI Ryuuu • \[Someday I Will Sing to the Sky\](https://www.mangaupdates.com/series.html?id=64839) by YONEDA Kou • 好き好き� 10代目 by YAMANOUE Sai • 日曜日。 by Moetsuki \*\*Vol 3\*\* (2007) - Cover illustrator: Pepushi - Stories included: • \[OUZI\](https://www.mangaupdates.com/series.html?id=39958) by Pepushi • 若葉のにおい by Nyunko • SPECIAL POSITION by AKAZAKI Yuki (also included in \[Doujin Sakka Collection - AKASAKI Yuki\](https://www.mangaupdates.com/series.html?id=192671)) • mano by YONEDA Kou (originally published in the anthology \*splash!\*) • 雲雀ひねもす by SAGAMI Waka • ダーリンは外国人 by MAKIMURA Maki • 清潔好きな男/身嗜みを整える男 by KANEGAE Shouko • 並盛修業デイズ～帰り道～ ; 並盛修業デイズ～遭遇～ ; 並盛修業デイズ～お誘い～ by AYASE Ichi • 全員がボケた日。by Haniwa • 色々なものがごめんなさい漫画 by SURUME Ikako • 陽気なマフィアの日常と駆け引き by YAMADA Hidari • 二段ベッドのある家 by Kitagawa • GOD FATHER02 by Kanoe • 見るのは夢ばかり by Masao • 猫まっしぐら by HACHI Fujiko • つかのま by Tetsu • 標的89のアレ ; 標的89のアレ2 by KIKUCHI Haiji • 喪失 by AKOU Susugu \*\*Vol 4\*\* (2007) - Cover illustrator: Pepushi - Stories included: • キミ→オレ。オレ→キミ。by Bosuko • \[Diletto\](https://www.mangaupdates.com/series.html?id=45972) by NAKAJOU Akira • \[Koitsu ni Ittai Nani o Shita.\](https://www.mangaupdates.com/series.html?id=47253) by YONEDA Kou • Secret by AKAZAKI Yuki (also included in \[Doujin Sakka Collection - AKASAKI Yuki\](https://www.mangaupdates.com/series.html?id=192671)) • 禁じられた遊び by by KANEGAE Shouko • 謎のヒットマン サラリーマンREBO 企画１「サラリーマン来る！」by HIBINO Yuuki & SHIMA Seiryuu • \[GOLD\](https://www.mangaupdates.com/series.html?id=49172) by AKOU Susugu • 山ツナで４コマ！ by Haniwa • こんな黒曜は嫌だ３ by Gyokuto • XXXガーディアン ; XANXUS×BERU by MIZUNO Hotori • 変則ハピネス by ISSHIKI Akira • 並盛ランキングのヒミツ by UDUKI Sonowo • 百年たっても待っていて by Aiko • JAB JAB STRAIGHT！ by MIDORIYAMA Youko • ノー・リーズン・ハッピネス by Kenko • ジャジャウマライダー by Murahito • Dino's Birthday by Haruno • STOP THE 獄寺 by Yukie • ガラスの靴 by TOGIYA Makoto \*\*Vol 5\*\* (2007) - Cover illustrator: Pepushi - Reprinted: YONEDA Kou, NAKAJOU Akira, NANAMI Noriko, AYASE Ichi, KANEGAE Shouko, YAMANOUE Sai, Kitagawa, CHIDORI Peko, FUNAKI Kazuo, smaru, Rieguchi, Gyokuto, R Miko, Ei, eca, NISHIZONO Ryou, TAKATSU Shou - Newly drawn: Bosuko, AKAZAKI Yuki, Condor, AOI Yuumu, IMAMOTO Jion, KIRYUU Hinaki, TOGIYA Makoto, Haniwa, MIZUNO Hotori, MITARAI Naoyuki, TOME Kusuko - Stories included: • \[Hinemosu Kimi ni Ubawareru\](https://www.mangaupdates.com/series.html?id=41073) by YONEDA Kou • \[color=blue\]Nakayama Hospital\[/color\] by FUNAKI Kazuo (Pairing: Xanxus x Squalo) \*\*Vol 6: