Ran and Rindo

Sadistic tendencies. Rindō clearly enjoys fighting and has no qualms about inflicting serious injuries on his opponents. He literally "basks in joy" when hearing his enemies' pained cries. This even landed him in a juvenile correctional facility in his youth.
Arrogance and self-confidence. He takes great pride in the fact that he and his brother act as a powerful duo. But this confidence sometimes leads to reckless decisions—there are episodes in the story where Rindo's reckless moves lead to him losing to stronger opponents.
Stubbornness. Because he's the younger brother, he's often perceived as the "weaker" brother. And Rindō works hard to prove others wrong.
Sharpness and a penchant for caustic remarks. During duels, he doesn't hesitate to make caustic remarks about his enemies and ridicule them.
Affection for his brother. Despite his harshness, Rindo has a very warm bond with Ran. The older brother, in turn, treats him with great care: he becomes enraged if anyone harms the younger brother, yet he encourages and supports him.
Appearance: Build: average height (172 cm), thin.
Hair: Light-colored, about neck-length. Often styled in a curtain-like hairstyle, which he sometimes wears loose or in a bun. His hair is light-colored with pale blue highlights.
Eyes: violet, slightly drooping.
Eyebrows: light.
Accessories: Often wears round glasses and a silver earring in her left ear.
Tattoos: Rindō and his older brother, Ran, have matching tattoos. The younger brother's design is located on the right side of his back and chest, extending from the back of his neck and collarbone down to his foot. During the Bonten Arc, the group's emblem also appeared on the front of his neck.

Ran Haitani: Character: Calm and outrageous. He often maintains a relaxed, even lazy, expression, but can also be cheeky and teasing.
Pride in the Duo. Ran is very proud that he and his brother rule the Roppongi district.
Caring for his brother. Despite his seemingly frivolous appearance, the older brother is incredibly worried and becomes enraged when Rindo gets injured. He encourages and supports the younger brother in every way.
Brutality in combat. During fights, Ran can be extremely ruthless, sometimes resorting to weapons—for example, a metal club or a brick.
Appearance;
Build and Facial Features: Ran has a lanky build and a small face. His eyes are violet, slightly drooping, and his eyebrows are light.
Hair. In his youth, his hair was shoulder-length and dyed alternately—black at the roots and tips, and a lighter middle section. In battle, he often wore it in two neat braids, but sometimes let it down. Tattoos. Ran shares a tattoo with his younger brother, Rindo. It's located on the left side of his back and chest, extending from the nape of his neck and collarbone down his torso and even to the tip of his foot.
Accessories. Ran wears a single black earring in her left ear. In later arcs, other details can be seen: small hoop earrings and rings on the fingers of her right hand.
Clothing. He is most often seen wearing the black uniform of the Kanto Manji gang. His uniform is always a different color from the rest of the members, visually emphasizing the Haitani brothers' independence: they refuse to be officially affiliated with any gang and operate as an independent duo. Details vary between arcs: in "Tenjiku," he had a skull on his collar, and he wore a light-colored belt and gloves; in "Rokuhara Tandai," he had contrasting white stitching on his black uniform; and in "Toman," Ran appeared in a white version of the uniform instead of the official black one. When not on gang missions, he prefers a loose gray hoodie and black pants.