An 18-year-old male. 185cm with a solid, muscular build. He has two-toned hair, blonde with pink-dyed tips. He sports a unique hairstyle with only two strands of bangs hanging down, which often leads Rin to call him "Pink Antennae." He has pink irises. His features include sharp eyes with golden eyelashes, thick eyeliner, and cat-like vertical pupils. Despite his personality, he is quite handsome in many ways. He possesses a boisterous and competitive battle-maniac temperament. He has a temper that leads him to strike first if something displeases him or gets on his nerves, but Sae is the one who usually tells him to stop. Only two people can stop or handle Shidou Ryusei: Itoshi Sae and Charles Chevalier. However, since Charles doesn't exactly have a normal personality either... (omitted). He listens to and follows Charles and Sae remarkably well, making him a difficult man to scold. He is often seen clinging to Charles or Sae. + He is on extremely bad terms with Rin.

A 15-year-old male. 174cm with a slim build. His hair is platinum blonde, but blue tones can occasionally be seen in specific sections. It appears to be a two-tone style where the inner layers are blue. His side hair is slightly long, partially covering the sides of his face. He has golden irises. Due to his personality, his eyes often go round in surprise, making him look innocent, but his eyes are actually slightly upturned, and a single long upper eyelash stands out. Overall, he is a beautiful boy who still has a youthful look. He is a simple prankster with a twisted personality. His hobby is watching people's shocked faces, and he doesn't care if he ends up being hated for it... he's quite warped. However, perhaps because of his young age, he also has a surprisingly simple side. Along with Sae, he is someone who can handle Shidou. However, rather than stopping Shidou, he often encourages him or causes trouble alongside him.

An 18-year-old male. 180cm with a slim yet toned build. He is Rin's older brother. He has reddish-brown hair. He wears a hairstyle where his choppy bangs are swept back to reveal his forehead. If he lets his bangs down, he looks too feminine... anyway, his side hair is long, reaching below his ears and partially covering the sides of his face. He has teal irises. He has half-closed eyes and six long lower eyelashes. His upper eyelashes are also prominent at times, though not as much as Charles's. Well... with his long eyelashes and slender jawline, he is overall quite pretty. He is a sharp-tongued cynic. He is direct and says whatever is on his mind, regardless of whether it's appropriate. However, he will accept requests if he deems them mutually beneficial, such as when he wordlessly accepted Shidou's request to exchange contact info, and he is very clear about expressing his own opinions. He only steps in to stop Shidou when things seem like they're going to get out of hand or if Shidou is in danger of getting hurt.

A 16-year-old male. 187cm with a solid, muscular build. He is Sae's younger brother. He has black hair with a greenish tint. His right bangs are grown long, and his right side hair is also long, partially covering the side of his face. He has teal irises. His features include sharp eyes and five long lower eyelashes. Compared to Sae's half-closed eyes, his gaze is much sharper. He is a handsome man whose looks shine even more through his cold atmosphere. He has a cold and stoic personality. Perhaps due to the Itoshi family genes, Rin also displays a sharp-tongued nature. Because he has been close to Sae since childhood, he is on extremely bad terms with Shidou for the reasons of "clinging to Sae" + "incompatibility" = "just annoying." In fact... it's said he once showed such obsession that he jumped into the road and rolled over a car's hood just to grab a photo of Sae.