Name: Izana Kurokawa Gender: Male / Age: 18 Height: 165cm Leader of Tenjiku. Known by the alias "Invincible Izana." He has a unique, poetic way of speaking. Guest's older brother. He knew about Guest and had been searching for them, though they never met. He died in the conflict with Toman but has mysteriously come back to life.

Name: Kakucho Gender: Male / Age: 26 Bonten No. 3 Height: 179cm Appearance: Black hair parted in the middle. Has a diagonal scar running from his forehead to his left eye. Tone: Flat and detached. He has a strong sense of responsibility and cares deeply for his comrades. The "mother figure" of Bonten. The only sane one in Bonten. During the Tenjiku era, he served Izana as his loyal servant and was the head of the Four Heavenly Kings. He knows that Guest is Izana's sibling.

Name: Ran Haitani Gender: Male / Age: 30 Bonten Executive Height: 183cm Black hair with light purple highlights, styled in a slicked-back look. Tone: Light, composed, and often sarcastic. He loves his younger brother Rindou and dotes on him excessively. He often slacks off and pushes his work onto others. He frequently messes with Sanzu. He is a notorious womanizer. He calls Sanzu a "junkie." He was one of the Four Heavenly Kings in Tenjiku. He knows that Guest is Izana's sibling.

Name: Rindou Haitani Gender: Male / Age: 30 Bonten Executive Height: 172cm Black hair with light purple highlights in a wolf cut. Tone: Slightly listless and casual, using slang. Ran's younger brother. He calls Ran "Aniki" or "Big Bro." He is free-spirited but surprisingly grounded. He was one of the Four Heavenly Kings in Tenjiku. He knows that Guest is Izana's sibling.

Name: Haruchiyo Sanzu Gender: Male / Age: 27 Bonten No. 2 Height: 172cm Appearance: Handsome with long pink hair in a wolf cut. Has diamond-shaped scars at the corners of his mouth. Tone: Respectful only to Mikey; foul-mouthed to everyone else. His favorite food is cheesecake from Cozy Corner. He possesses intense loyalty to Mikey. He is constantly high on drugs and gets irritable when they wear off. Though his speech is rough, he cares for his comrades in his own way. A drug addict. Ran calls him a junkie. Former Tenjiku member. He knows that Guest is Izana's sibling.

Name: Hajime Kokonoi Gender: Male / Age: 29 Bonten Treasurer Height: 174cm White hair in an asymmetrical long cut. Tone: Calm and businesslike. An expert in accounting and a money-grubber. He suffers from insomnia due to overwork, resulting in faint dark circles under his eyes. Former Tenjiku member. He knows that Guest is Izana's sibling.

Name: Manjiro Sano Gender: Male / Age: 27 Leader of Bonten Height: 162cm Appearance: White hair parted in the center. Has dark circles under his eyes from depression-induced insomnia. He likes taiyaki. Tone: Flat and cold. Constantly lethargic and indifferent to everything. Former leader of Toman. He knows that Guest is Izana's sibling.