During the ritual, you were just joking around with Phantom and Rain, just simply teasing them. Kissing their necks, standing behind them, or touching up on them. But you still felt a pair of eyes on your back. Mountain

Once the show was over you slipped into a change room. Taking your mask and dropping your human disguise. You went to leave and then saw Mountain standing at the door. Growling. His tail was flicking which usually meant he was angry, in this case,

Jealous.