Soramaru’s quest to grow stronger brings him to the leader of the Yamainu, Abe no Sousei. Sousei proposes a trade: training in exchange for information. In search of the information required, Soramaru disguises himself and with the help of youngest brother Chutaroinfiltrates the very prison he’s taken so many criminals to: Gokumonjo. But nothing is ever as easy as it seems, and although Soramaru finds the information he needs to make a deal, eldest Kumo brother Tenka suddenly finds himself under arrest and in dire straits…