Given Marvelous AQL’s success with the Senran Kagura series they seemed like a more fitting developer for a High School DxD game than Kadokawa Games. Well, Marvelous AQL is working with the High School DxD series too and created a "bouncy" card RPG.
High School DxD characters are represented by cards and like other card games cards can evolve. Specific to High School DxD the game has Dress Breaks.
And here’s how Marvelous AQL is promoting the game in Japan…