On emulator (PPSSPP) you can significantly boost visual/audio fidelity:
for the PSP, but fan-made English patches and translation guides exist to make the Japanese-only title playable. English Translation Status Fan Patches
and features an original story where Tsuna and Reborn investigate a mysterious accident in a virtual training room. Customization
Katekyō Hitman Reborn! Battle Arena PSP English patch is a community-driven project designed to make this formerly Japan-exclusive 3D fighting game accessible to international fans. Released in September 2008 by and developed by Ancient , the game centers on the Vongola Family's combat trials. Project Overview and Technical Implementation