"Don't underestimate my disciple!" Bunko faces criticism from the Four Heavenly Kings of Kamigata Rakugo for taking on a disciple against the wishes of his predecessor. Thanks to a proposal from Shirōdanji, if Mameda can clear the test set by the Four Heavenly Kings, the existence of Daikokutei will be recognized. In order to return to his beloved master, Mameda challenges the uniquely skilled Four Heavenly Kings――! The past and promises of Master Bunko are finally revealed in this explosive volume of master-disciple love, Volume 4!