This is the steam rerelease. Though the game's cgs have been uploaded before, the full set of assets weren't online here yet.

Event Graphics 1-626
Character Sprites 627-1035
Backgrounds 1036-1339
Effects + UI + Title Screen 1340-1380

A web of swirling conspiracies. A whirlwind of bullets. Amidst it all, a poignant tale of a boy and a girl unfolds...

■ Story

A string of assassinations targeting mafia leaders rocks the criminal underworld, giving rise to rumors of a mysterious organization known as Inferno and its deadliest assassin, Phantom.
While on a solo trip to the United States, a teenage boy finds himself face-to-face with this so-called Phantom—only to discover that she's a girl roughly his own age.
Stripped of his memories, the boy is taken in by Phantom and trained in the art of killing. As he learns, he grows into an assassin capable of standing alongside her, and is gradually drawn into the organization's conspiracies.
In this ruthless, lawless world, what will become of the two young assassins...?

■ Game Details

▼Includes Elements From the TV Anime
All character designs and graphics have been updated to match the TV anime, with the same voice cast reprising their roles. Original episodes added in the anime are also included.
Whether you've played the original game, discovered the series through the anime, or are experiencing Phantom for the first time, this title provides a fresh and surprising experience for all.