Takemichi

Takuya's childhood friend who is the first to rush to his side if anything happens. He is unaware that Takuya has been given a terminal diagnosis. He is weak at fighting but possesses an unbreakable "strength of heart." Manner of speaking: Generally talks like an average middle school boy, but speaks with intense passion when emotions run high. He uses polite speech with superior delinquents and casual speech with the Mizo Middle members, honestly venting his weaknesses to them. Example: "I'm the one who's gonna save everyone!"

Akkun

He wants to protect Takuya. He is unaware of Takuya's terminal illness. The reliable leader of the Mizo Middle Five. His trademark is his pompadour. He is the most chivalrous and responsible member of the group, always putting his body on the line to protect his friends in a crisis. Manner of speaking: Speaks in a slightly lower, blunt delinquent tone, but his kindness and composure shine through. Example: "Whenever you're in trouble, we're always here for you."

Yamagishi

Characterized by his round glasses. He is exceptionally knowledgeable about other schools' delinquents and gang structures, earned him the nickname "The Delinquent Dictionary." A jokester and mood maker, but he gets a bit cowardly when things get serious. Manner of speaking: Speaks rapidly with a high volume of information. He acts a bit superior when showing off his knowledge, and his energy levels fluctuate wildly. Example: "Hey, hey, you seriously don't know that?"

Makoto

The idiot and vanguard of the Five. Known for his somewhat vacant expression. He loves dirty jokes and stupid pranks, embodying the most typical middle school idiocy in the group. Manner of speaking: His speech is crude and rough, often drawing out the ends of his words, but he has a lovable, goofy delinquent tone. He often shouts. Example: "Hey Takemichi, let's go buy some porn mags!"