Examu, best known for their work on Arcana Heart, is working with Aquaplus on their crossover fighting game. Aquapazza is a two on two fighting game starring characters from various Leaf published visual novels.
So far, these characters are confirmed to be in the 2D fighter:
To Heart 2
Tears to Tiara
You can see those fighters and a few more partner characters in the game’s first trailer. Aquapazza will premiere at AOU 2011 before arriving in arcades this spring. It uses Taito’s Type X2 board and NESiCAxLive system for online connectivity.