Special episode that got crowdfunded by Green Funding.

A few years ago, the team led by Long Ze, known as one of the city's three masters, lost to the Titans who used conspiracy to win. Today, in order to be able to defeat the invincible Titan, Long Ze’s child, Long Ran, Long Xiang, took the journey of gathering partners. The two looked for the predecessors of the year and the current strong, overcoming various difficulties and invited them to return and enter. After that, under the strong training of Dr. Warring States, Long Ran and his partners got a huge improvement. Fight with the Beast God team and become a comrade-in-arms. In the end, in the battle with the Titans, through various difficulties and tests, and achieved the final victory. (translated from douban)

The seemingly eternal cat-and-mouse battle has ended, and now everyone is living peacefully. One day, an Eto-musume (Zodiac girl) named Na-tan appears, to the puzzlement of the 12 signs, and to the unreserved delight of Nya-tan (whose spirits are always lifted by the pure, straightforward Na-tan). Meanwhile, Chu-tan also appears and warns of a looming disaster. "The seal ... has been broken." Who is this mysterious Eto-musume Na-tan? What in the world is the deity that has awoken beneath the seal?