Masaru Hyodo is a bully at Koyuki's school. He is good at playing guitar. He targets Koyuki, because he thinks that Koyuki is overstepping the social rankings at the school when he starts to get more confident.
Personality
Masaru is a bully, who behaves in an arrogant and controlling manner. He allies with Rikiya to bully Koyuki. His attitude toward Koyuki improves later on in the series.
Masaru is also a talented musician. His father was a famous guitar player.