Kuko Harai/Story

## Drama Tracks/Manga (main storyline)

### Early Life

A son of the elder monk of Kugen Temple, Shakku Harai, Kuko managed to accomplish ascetic trainings when he was 14, which is a remarkable achievement. Despite Shakku being proud of Kuko and his achievements, he couldn't stand Kuko's unruly nature and his inappropriate for a monk behavior.
At school, Kuko approached Ren, a student who was harshly bullied by his classmates to the point he was planning suicide. Kuko couldn't stand it and tried to help Ren to fight his bullies back. As Ren was repeatedly beaten while standing up to his bullies, Kuko appeared and approached them; after he beat up the main bully so badly to the point he was crippled, the bully ended up jumping off the building to escape Kuko’s wrath, dying in the process. The bullies' parents filed a lawsuit against Kuko and dubbed him a killer, which meant it could get him to juvenile facility. Kuko got approached by Hitoya Amaguni who took on his case, although Kuko refused to cooperate and kept bickering with Hitoya. Despite their bickering, Hitoya solved Kuko's case and although he didn't want to show it, Kuko was grateful.
### Naughty Busters

During the territory war in Ikebukuro, Kuko and his best friend, Ichiro Yamada formed a team called Naughty Busters and started working for the Stairway to Heaven. The group leader, Mozuku Shito ordered Kuko and Ichiro to reclaim the territory in Ikebukuro from the rival group Mad Comic Dialogue. Kuko and Ichiro successfully reclaimed the territory, before they got confronted by Samatoki Aohitsugi and Sasara Nurude from Mad Comic Dialogue.
Kuko and Ichiro engaged in a battle with Samatoki and Sasara, leading to the four them being highly exhausted but neither of them was going to give up. Eventually, Mozuku revealed that he betrayed Naughty Busters, throwing them into the fight with Mad Comic Dialogue to win the war with minimum involvement. When Mozuku's men were ready to get rid of four of them, Kuko and Ichiro joined forces with Samatoki and Sasara, defeating Mozuku and his men.
Ending all relations with the Stairway to Heaven, Kuko and Ichiro joined Mad Comic Dialogue, working together with Samatoki and Sasara. However, Kuko and Sasara were confronted by Ramuda Amemura who used the true Hypnosis Mic to mindhack them and turn them against their friends. Under Ramuda's influence, he attacked Ichiro, saying that Kuko despises him. Ichiro fought back but couldn't hurt his best friend, so Kuko beat him up and left the team.
After parting his way with Ichiro and Mad Comic Dialogue, Kuko returned back to the Kugen Temple in Nagoya. He was also invited to Chuohku and witnessed Ichiro participating in the Division Rap Battle.
### Bad Ass Temple

Later, Kuko received an invitation from the Party of Words to participate in the next Division Rap Battle, as well as three Hypnosis Mics. Kuko knew that he had no choice but to oblige the Party's request but he didn't know how to get people to join his team. While Kuko and his father got into an another quarrel, they were visited by Hitoya who asked Shakku to let Jyushi Aimono to train at the temple.
Shakku agreed to let Jyushi train but only if Kuko will be training him, although Kuko got angry that his father decided it without his consent. Shakku, however, said that Kuko have to oblige or he'll never let him to become an actual monk at the temple. Kuko initially wasn't sure about Jyushi but after hearing about his experience with bullying and his desire to become stronger, Kuko decided to help him.
Kuko let Jyushi to choose between the going through ascetic trainings or withstanding his Hypnosis Mic attacks, as Jyushi chose the latter. Kuko mercilessly attacked him with his mic, leading to Jyushi losing his consciousness several times. Hitoya was concerned about Kuko's techniques but he still continued to do it and even got Hitoya to help with the training. Finally, Jyushi managed to withstand their verses and even hit Kuko back with his own.
Admitting Jyushi's conviction, Kuko offered him to form a team with him, so they could keep getting stronger togerher and Jyushi accepted his offer. Kuko also got Hitoya to join, telling that he'll get a chance to confront Jakurai Jinguji and finally defeat him. Together, they formed Bad Ass Temple to represent Nagoya Division.
### Challenging Champions

Kuko and Jyushi continued to train at the temple with Kuko scolding Jyushi to slack off during meditation. Kuko then thought about improving their teamwork and called Hitoya to the temple for a practice, although Hitoya said that he has an affair in Shinjuku. Kuko assumed that Hitoya went to challenge Matenro, so he grabbed Jyushi and went to Shinjuku to catch up with him. Kuko and Jyushi went to the Fragrance host club where Kuko started to cause chaos, demanding to bring him Hifumi Izanami and forcing all customers to leave.
Eventually, Hifumi arrived at the club together with Doppo Kannonzaka and Kuko said that even though he respects them as the champions of the Division Battle, they came as their enemies. Kuko then challenged them for a battle and even though Hifumi and Doppo were able to fight back, Kuko and Jyushi didn't go down. Suddenly, the police arrived at the club to deal with the chaos and Jyushi, being scared that they might be arrested, grabbed Kuko and ran away from the club, much to Kuko's fury.