Set during the Qin Dynasty in ancient China, a brave assassin attempts to kill the Emperor to save his homeland. However, the assassin fails and in retaliation, the Emperor sends his troops to kill his eight year old son. A highly skilled swordsman intervenes and rescues the boy. After their escape from the forces of the Emperor, they embark on a journey to change the destiny of the empire while encountering several friends and foes along the way.

Sixth season of Qin Shi Ming Yue.

Abandoned by their abusive parents and with only each other to depend on, siblings Utsutsu and Yume Hasegawa find themselves led astray by beautiful red butterflies that have appeared in their world. Unbeknownst to them, these crimson winged heralds trumpet the beginning of a cannibalistic nightmare—a mysterious virus known as Pupa is about to hatch. After succumbing to the full effects of Pupa, Yume undergoes a grotesque metamorphosis into a monstrous creature with an insatiable desire for flesh; Utsutsu, on the other hand, is only partially affected, gaining remarkable regenerative powers instead. Reaffirming the resolve to keep the promise he made to himself years ago, Utsutsu is willing to sacrifice everything in order to always be there for his precious little sister. Pupa tells the story of a loving brother's desperate struggles to save his sister while protecting the world from her uncontrollable hunger.

Season Five continues the struggle of the Mohists and their allies against the Qin Empire in Sanghai and Crown Prince Fushu has a prominent role. A new character from the Taoist school Leader Xiaomeng appears on the side of the Qin. The Peasant School takes on a major role as leaders of the six Halls struggle for supremacy and to be the Xia Kui successor. The young and powerful General Zhang Han and the Shadow Division also make an entrance. Wei Zhuang and the Quicksand Group form and uneasy alliance with the Mohists and try to enlist the aid of the warring Peasant School. Tianming, Shaoyu and Shi Lan continue their search for Yue-er on the floating city, Mirage. (Source: Qin's Moon Wiki)