When Marius hands Ezra a Roman gladius with a stylized T in the hilt, he tells Ezra that it's special. Ezra finds out just how special when he wakes up to a gladiator in his house. He soon learns that like Marius, Titus prayed to Janus to give him a new life and the god complied. Now that he's met the man to go along with the sword, Ezra realizes that he yearns to share his world, and his life, with the gladiator.
Titus knew nothing except the arena and his few good friends in the cohort. He follows Marius' lead, trusting the god to deliver him from his brutal life. When he realizes he's in Ezra's house, and that Ezra has his sword, he quickly learns that the modern world is good. Bacon? Hot water? What more could a gladiator want? Getting to know Ezra, and exploring his delicious body would make an excellent start.