It's a Wonderful World just keeps getting more wonderful, and, um, worldly. Now in addition to the graphic style, we're hyped about the gameplay! Jeux-France has posted some scans of the game in action, highlighting the touch-screen weapons system, which uses badges to assign different attacks.
The attacks shown include Patrol Shot, Piercing Shot, Black Hole, Burst Shot, and Velocity Crash. All of these attacks are done with stylus gestures. The scans also state that part of the game takes place in Shibuya, making the game even more Jet Set Radio-like than we thought.