Exactly what it says on the tin, an IRM for an Engine who speedruns, and applies a few speedrunning glitches on the blaseball field. During his time in the shadows, he discovered various exploits to optimize the time it takes to run the bases, and found game-breaking bugs that he never has and never will use.
It's not complicated, and the text itself is rather short. You can see the full text on the Tokyo Lift side server.
