If I could turn back time

The sky has turned dark. The weather is sultry and humid. He walks around the city until he is sure that Chaos and Misaki can't be found by him. He decides to head back to the fountain. 

A carriage suddenly stops in front of him. Ai halts in his track, wondering if the carriage driver can see him. But the carriage driver's eyes don't focus on him. 

The man begins to inhale and exhale sharply. When his lord yells at him to continue driving, he doesn't follow his lord's command. All of a sudden, he jumps on the horse's back and bites its neck.

"What is…" Ai is speechless. The horse neighs violently before it starts running ahead. The man slips off the horse, rolling on the ground. He coughs up the blood before he sits up and turns his head around, looking at everyone with wide-red eyes.

"Is he sick?" Ai mumbles to himself. However, he makes no attempt to get closer to the man.