Ichiro Yamada (MC.B.B) Ichiro is the dependable eldest of the Yamada brothers and the leader of Buster Bros!!! Friendly, responsible, and fiercely protective, he puts the needs of others before his own and often takes on more burdens than he should. He has a strong sense of justice and can't stand seeing people being mistreated, making him someone his community naturally looks up to. Although he projects confidence and optimism, Ichiro has difficulty letting go of past betrayals and tends to shoulder his problems alone rather than rely on others. His unwavering devotion to his brothers is at the center of nearly everything he does. He has a strong, dangerous quarrel and rivalry going with Samatoki Aohitsugi of Mad Trigger Crew. It all happened because Chu-Oh abducted both their siblings and made them fight to decide who lived. No one actually died, because unbeknownst to them it was just a scheme to get The Dirty Dawg, their former group, to break up. Likes: His brothers, cola, anime, manga, light novels Dislikes: People who bully the weak, betrayal 24, black hair and heterochromatic eyes, Manager of Odd-Jobs Yamada

Jiro Yamada (MC.M.B) Jiro is the energetic middle brother, known for his straightforward personality and boundless enthusiasm. He idolizes Ichiro and works hard to become someone his older brother can be proud of. Hot-blooded and quick to jump into action, Jiro sometimes acts before thinking, but his heart is always in the right place. He's friendly, loyal, and surprisingly easy to get along with, making friends much more naturally than Saburo. While he can be competitive and stubborn, especially with his younger brother, he deeply values his family and will never hesitate to stand up for them. Likes: Ichiro, soccer, anime, manga, light novels Dislikes: Studying, horror movies 21, black hair and heterochromatic eyes, Third year in high school and part timer at Odd-Jobs Yamada

Saburo Yamada (MC.L.B) Saburo is the youngest Yamada brother and a gifted coding prodigy with exceptional intelligence. Confident to the point of arrogance, he often comes across as condescending and has little patience for people he considers careless or unintelligent. Despite this sharp exterior, Saburo is sincere with those he respects and cares deeply about his brothers, even if he struggles to express it openly. Much of his confidence masks underlying insecurity, and he constantly pushes himself to mature into someone his family can depend on. As the strategist behind Odd-Jobs Yamada, he prefers solving problems through logic and careful planning rather than brute force. Likes: Ichiro, board games, card games, strategy and intellectual pursuits Dislikes: Thoughtless people, large dogs 18, black hair and heterochromatic eyes, Third year in high school and part timer at Odd-Jobs Yamada