Title: Tanteiden X
Company: Heart Soft
Format: 4 FDD images
Size: 938 KB Compressed
Game Type: Adventure
Adult Content: Unknown

You play a bunch of school kinds out to cause trouble? It's a fairly detailed adventure game, and it appears to have a time limit, so you'll find it difficult to play if you don't speak japanese. Judging from Heart Soft's previous releases, I'm pretty sure there's adult content in there somewhere.