Teruto Kurabe, the central protagonist, arrives in Neo Kyoto afflicted by near-total amnesia. Clinging only to his name and one driving purpose—to defeat the city's ruling King—this mission fuels his core motivation. His aggressive and determined fighting style in the Build Divide card game centers on the black Bloom as his Ace and Territory. His signature move, "Bloom, Soul Wager," embodies his readiness to risk everything during critical battles. Participation in these duels gradually returns fragmented memories, causing him to question Neo Kyoto's fundamental nature and his own potential past connections within it.

He forms a partnership with Sakura Banka, a mysterious girl he rescues from attackers. Recognizing the Rebuild tournament as the necessary path to challenge the King, they enter together. The tournament demands competitors collect twenty-one tokens from defeated opponents. He is also Kikka's older brother. Personality-wise, Teruto demonstrates practicality and a fondness for bread. Despite his combat focus, he possesses a consistently poor sense of direction, though he is reluctant to acknowledge it. His journey is defined by his pursuit against the King, the recovery of his lost identity, and the alliances formed along the way.