Inexorable Foe

Biru clicked the stopwatch, puffing and sweating. He was down three seconds from yesterday. Was that enough?

He made himself walk, cool down after the obstacle course. He couldn't afford an injury now. He was barely keeping even as it was, his performance slipping daily. Old age comes to everyone, even the Bound. There was no guidance in the Codex for this; it was a matter of honor for a Bound One to destroy himself when he became flawed.

What was flawed? Where was the line of imperfection?

Biru clenched his fist around the stopwatch. He would run again tomorrow.