One of the many teams Yomi dependent. The only one of its members who has seen and explained his past until now Rimi Kokorone. Not much is known about Titan just got Rimi become group leader beating the previous leader, Kronos, capturing the attention of Yami. One can assume that Titan was abducted by Yomi, at the time Rimi joined Yomi, as one of the disciples of Kensei, or looking to stay separate from others potential. It is unknown whether Kronos continued to be a member of Titan or not after their fight, which resulted in loss to Rimi. If being followed, you may have turned to be the leader by way of Rimi Yomi.