Community members on platforms like the Steam Community often shared compressed files containing translation assets to help players understand the story before the official Steam release.
As of January 6, 2023, the eXceed series was delisted from Steam because Nyu Media shut down and was unable to transfer the publishing rights back to the original developer.
Are you trying to from that archive, or were you looking for a technical breakdown of how its bullet patterns work? Gun Bullet Children | EXceed Wiki | Fandom
The .rar file you mentioned likely contains either a pirated copy of the game or, more commonly, an for the original Japanese retail version.
The series was localized and brought to Steam by Nyu Media . Availability Status
If you are looking for information regarding , it is the first game in the eXceed bullet-hell (danmaku) shoot-'em-up series developed by the Japanese doujin circle FLAT .
The story follows Sowel Devosiana, a girl who joins the "Gun Bullet Children" program to hunt vampires and avenge her parents.