Based on the life story of the swordsman Miyamoto Musashi.

Yajima Kintaro was once the infamous boss of the Hasshu League biker gang, who at their peak boasted more than 10,000 members, but after meeting and falling in love with a partially sighted girl named Akemi, he gradually mellowed and disassociated himself with gang life.Unfortunately their love proved to be short lived when Akemi died in childbirth, but her last wish was that Kintaro would become a salaryman and raise their son, Ryuta in a stable environment. It's a request Kintaro cannot refuse, and after saving the life of the CEO of Yamamoto Construction he finally gets an opportunity to change his lifestyle once and for all. However, it seems the life of a salaryman is anything but stable when your employers are a multi-million pound constructor whose managing board is made up of corrupt ex-governmental ministers that are busy setting plans in motion to stage a hostile takeover and seize the company for their own nefarious dealings.

Oddball Junior High Student Mankichi Togawa accompanied by the one eyed Ginji, sets out on a quest to become the number one gang leader in Japan.

(Source: ANN)

Yasuda Ippei is the heir to the wealthy Yasuda Family, and a bright and talented student who is admired by all. On his 18th birthday, he is sent on a year-long journey in which he is guaranteed complete and utter freedom. However, unless he returns by the end of the year with a bride the entire family approves of, he will be disinherited.

(Source: Mangadex)

Shimatani Shousuke, an editor for a publishing company in Tokyo and Yamauchi Shinichirou, a graduate of one of Japan's top universities and bank employee, have been best friends all life long. After both of them proposed to the same girl, to keep their friendship intact, all three of them decide to get married.

Will this decision bring them closer together, or end up with one of them being left behind?