Kent used the connection between himself and his master—since she is part of his harem—to teleport inside the arena. He appeared in a room where the Saintess was checking to see if Unity's armor was perfect.
Of course, it was perfect, but she was just being a supportive sister to her.
"Kent... you're here," Unity said the moment Kent appeared inside the room.
"Sorry for the lateness. I had some minor setbacks, but I'm here now," Kent said, walking toward her. The Saintess was also done checking her already perfect armor.
"I'm glad that you both are here," Unity said with a sigh. She seemed to finally be at peace.
"You seem on edge," Kent commented. "Don't tell me you're having cold feet."
"No, that's not it. Though I never wanted this duel to happen, I guess I'm just too afraid I might not have good control of my skills and accidentally kill him," Unity said, making Kent smirk.