In ancient times in Kyushu's nine provinces, a prophecy foretold a catastrophic event involving falling comets that would disrupt the balance of the world. Surprisingly, the comets passed without incident, coinciding with the birth of a boy named Ouriku in a remote village. Years later, as the memory of the prophecy fades, the prestigious Reikenzan clan organizes an exam to recruit gifted individuals as disciples. Ouriku, along with his servant Ouchou, embarks on this journey, unaware of the whimsical and carefree nature of the exam's organizer, Oubu. Amid unpredictable challenges, Reikenzan: Hoshikuzu-tachi no Utage chronicles Ouriku's quest to attain the esteemed status of a sage.