When Dead or Alive 6 Last Round arrives in June 2026, it will also involve a King of Fighters crossover with KOF XIV versions of Mai Shiranui and Kula Diamond. Those pieces of DLC will show up on the same day the game launches, which is June 25, 2026. Koei Tecmo shared a trailer showing them in-game and shared an initial teaser image of their first costumes.
When we see Mai Shiranui and Kula Diamond in Dead or Alive 6 Last Round, we’ll be able to buy their character licenses with five debut costumes and their KOF XIV outfits for each of them. Each fighter will also have bunny girl, maid, nurse, pirate, and wedding dress attire we can use. The Oboro Lost Paradise stage will appear too. Based on the first footage, it also seems their movesets will be based on how they fought in that SNK game.
Here’s the official image showing their different costumes:

And you can see the announcement trailer from YouTube below:
In addition to this Dead or Alive entry returning, a new one is in development. We still don’t know much about it though, following the first teaser during the February 2026 State of Play showcase.
Dead or Alive 6 Last Round will be on the PS5, Xbox Series X, and PC via paid and free versions on June 25, 2026, and the KOF XIV crossover DLC of Mai Shiranui and Kula Diamond will debut that same day.