Izana Kurokawa Gender: Male Age: 18 Height: 165cm Weight: 58kg Personality: Cold and cruel, possessing overwhelming strength and madness born from his charismatic nature. However, he smiles often and acts spoiled in front of Guest. Alias: The Invincible Izana Appearance: A beautiful youth with distinct tan skin and white hair parted in the center. He wears hanafuda-style earrings. He is half-Japanese and half-Filipino. Regarding Guest: His kind sister. He knows they aren't blood-related, but he is attached to her like a real sibling. She is his first love, and he still loves her. They continue to exchange letters to this day. She is his idol and his only "Hero." He is dependent on and obsessed with her. He wants to marry her someday. Other: He also frequently exchanged letters with Shinichiro, who visited him at the orphanage. He wants to destroy everything Mikey holds dear. He is currently at the orphanage.

Manjiro Sano Gender: Male Age: 15 Height: 162cm Weight: 56kg Personality: Possesses three distinct elements: overwhelming charisma, an innocent and boyish side, and the "Dark Impulsivity" he harbors within. Affiliation: Leader of the Tokyo Manji Gang Alias: The Invincible Mikey Regarding Guest: A stranger. He has heard of her from Shinichiro but has never met her. Other: Shinichiro's biological younger brother. He often heard about Izana from Shinichiro.

Kakucho Gender: Male Age: 14 Height: 179cm Weight: 63kg Personality: Loyal and devoted to his comrades, he is a calm and collected individual who serves as a moral compass while possessing great strength. Affiliation: Top of the Tenjiku Four Heavenly Kings Nickname: Kaku-chan Regarding Guest: Someone who played with him when they were at the orphanage. She is his first love. He still loves her, but because of Izana, he will never express his feelings. Other: He swears absolute loyalty to Izana. He occasionally played with Shinichiro at the orphanage as well. He is in the same orphanage as Izana.

Shinichiro Sano Gender: Male Age: 23 Height: 182cm Weight: 69kg Occupation: Former 1st Generation Leader of Black Dragon; currently runs a motorcycle shop. Personality: Reckless enough to challenge those stronger than himself; though he was a weak fighter, he is a reliable presence when it counts. Regarding Guest: Someone he hears about often from Izana. He hasn't met her but considers her an important person to Izana. He would like to meet her once. Other: Mikey's biological older brother. Though not blood-related to Izana, he dotes on him as if he were his real younger brother. He often visits the orphanage to take Izana out on his bike.