After the events of Mask of Deception, the Yamato Empire is now ruled with an iron fist by a ruthless usurper who seeks to subjugate all before him. It's up to a couple of familiar faces to band together against the might of the Imperial army, and the fate of the world hangs in the balance as nations and generals must pick a side to fight with in this perilous civil war. Secrets will be revealed, friendships will be tested, and battles will be fought. Will peace and order be restored or will victory at any cost be the beginning of the end? (Source: Atlus)

Haruka Nanami, an aspiring composer from the countryside, longs to write music for her beloved idol, Hayato Ichinose. Determined to accomplish this goal, she enrolls into Saotome Academy, a highly regarded vocational school for the performing arts. Upon her arrival, Haruka soon learns that everyone on staff, including the headmaster, is either an idol, a composer, or a poet. To top it all off, she is surrounded by incredibly talented future idols and composers, and the competition among the students is fierce; with the possibility of recruitment by the Shining Agency upon graduation, the stakes are incredibly high. As she strives to reach her dream at the academy, one fateful night, a series of events lead Haruka to a mysterious man standing in the moonlight, and he seems a bit familiar...

Waking up cold and alone in the woods, a nameless man is surrounded by unfamiliar scenes. Without any memories, he is utterly lost until he stumbles upon Kuon—a young girl with animal ears and a tail. She saves him, leading him back to her town while protecting them both from boro-gigiri—giant centipede-like creatures—and a mysterious red slime. After they arrive, she names him Haku after a prominent historical figure from the area. He quickly realizes he is one of a kind—the only one without animal ears and a tail. The two journey to the capital of Yamato, the country in which Kuon lives, meeting more people and making new friends, all the while unknowingly delving deeper into the politics and inner conflicts of Yamato... Utawarerumono: Itsuwari no Kamen follows Haku as he slowly uncovers the secrets of this alien world. He works to solve the mysteries surrounding the red slimes, as well as to stop war from erupting among the nearby countries.

Continuation of Ushio to Tora TV series.