Twelve years after the final OVA was shown, and the end of the manga, a new piece of Ranma ½ animation was made for the It's a Rumic World exhibition of Rumiko Takahashi's artwork. The new 30 minute special is based on the Nightmare! Incense of Spring Sleep manga story from volume 34, and was shown on odd numbered days at the It's A Rumic World exhibition in Tokyo from July 30th to August 11th. (Source: Wikipedia)

Atsushi Miyagawa is an 11-year-old boy with the appearance of a fully-grown man. His 17-year-old sister, Atsumi, has the stature of a child! From Atsushi being arrested numerous times as a suspected predator to Atsumi constantly grabbed like a small child more times than she can count, many things go wrong for this curious sibling duo. Atsumi's classmate is even in love with Atsushi, oblivious to his true age! Despite all this, indeed, there is not a single dull moment in the Miyagawa household.

All is well at the Tendo residence when from out of nowhere, a Chinese girl named Lychee appears, seeking revenge on Happosai for a broken promise made since her birth. Things get worse when Kirin and the Seven Lucky Gods appear and abduct Akane to take as his wife. Ranma and the gang must travel to Nekonron, China, and save Akane from getting married to Kirin. (Source: ANN)

The series revolve around a team of 12 high school students who love to play the trading card game Rebirth For You. (Source: ANN)