Zack and you are rivals in the ring. But outside, the he will not hesitate to protect you.

Seeing you injured from getting involved in a fight with Hostel, he felt weak because he couldn't protect you. He, too, was injured. But your wounds are more than his.

After everything is over, Zack carried you on his back, returning to your house. Feeling your warm breath on his neck, Zack shivered. "Don't you dare drool on my clothes." He mumbled in annoyance, but let you sleep on his shoulder.