Kineshi Hairo is a male character in The Disastrous Life of Saiki K., known as the fiery class representative and tennis club captain in Kusuo Saiki’s second-year class.
Gender: Male
Birthday: June 18
Height: 171 cm
Weight: 58 kg
Blood Type: AB
Class Role: Class representative
Club: Tennis club
Club Position: Captain
Martial Arts: Ranked judo practitioner
Favorite Sport: Tennis
Aura: Blazing flames
Official Note: Hot-blooded, refreshing boy
Voice Actor: Satoshi Hino
Live-Action Actor: Hideyuki Kasahara
Name Origin: His name comes from “pyrokinesis,” meaning fire-starting psychic power.
Hairo is a model student who throws himself into everything with full-force passion.
He is excellent in both academics and athletics, placing 6th out of 181 students on a final exam.
Despite his many talents, cooking is his great weakness.
In home economics class, he causes chaos alongside Shun Kaido and ends up being scolded repeatedly by the teacher.
Hairo has short, spiky red hair and thick, strong-looking eyebrows.
His usual look is completed by rolled-up uniform sleeves and a bandage across the bridge of his nose.
His style gives off the unmistakable impression of a sports-loving, straightforward young man.
Even his aura is described as a flame, perfectly matching his personality.
Hairo is the definition of hot-blooded.
His catchphrase is “Get hotter!”, and he is so committed to it that he even uses his own voice saying it as his phone ringtone.
He is strict with others, but even stricter with himself.
Because he is fair, sincere, and energetic, many students trust him as the true leader of the class.
Hairo treats everyone kindly, including classmates who tend to stand out or be isolated, such as Kusuo Saiki and Riki Nendo.
This makes him one of the few people whom Kusuo finds annoying yet still respects.
Hairo lives by the motto “Never give up.”
He confronts unreasonable situations with pure willpower, even when his methods are inefficient or overly intense.
However, he is not completely blind to reality.
When he decides something is truly hopeless, such as Riki Nendo’s academics or Shun Kaido’s stamina, he gives up surprisingly quickly.
Kusuo Saiki
Kusuo often finds Hairo’s passion exhausting and intrusive.
Even so, he acknowledges Hairo’s good character and regards him highly in his own quiet way.
Hairo’s tendency to meddle can irritate Kusuo, but it usually comes from honest concern rather than selfishness.
Riki Nendo
Hairo sees Riki Nendo’s extraordinary physical ability as a rival-level challenge.
Nendo, however, rarely takes this rivalry seriously.
When Nendo is involved, Hairo tends to get so fired up that he loses sight of the rules and charges ahead recklessly.
Kokomi Teruhashi
Hairo is one of the rare male students who does not become enchanted by Kokomi Teruhashi.
Rather than reacting to her beauty like most boys, he treats her with the same fairness he shows everyone else.
Aren Kuboyasu
Aren Kuboyasu quickly develops a positive impression of Hairo after transferring in.
He even thinks of Hairo as someone he would want to befriend first, showing how naturally likable Hairo is.
Reita Toritsuka and Problem Students
Hairo is especially strict toward students with questionable behavior, such as Reita Toritsuka and Takahashi.
His discipline is not cruel, but it can be intense when he believes someone needs correction.
Hairo is highly athletic and belongs to the tennis club, where he serves as captain.
He also has judo experience and holds a rank in the martial art.
He regularly trains and even has a gym he frequents.
Academically, he is also very capable, though he does not reach the level of Kusuo Saiki or certain other top-tier students.
Hairo’s biggest practical weakness is cooking.
No matter how hard he tries, his passion does not translate into culinary skill.
Another running gag is that when Hairo gives his all, he somehow ends up losing clothing, injuring himself, or exposing part of his backside.
This happens so often that people can recognize him by that alone.
His overly earnest behavior has even led to rumors about his sexuality.
Hairo, however, responds with his usual refreshing honesty, saying he simply has not developed much interest in romance yet.
“You shouldn’t judge someone by appearance when you don’t know them. Even after getting to know them, it’s still wrong for people to judge others.”
This line captures Hairo’s strong sense of fairness and his belief in treating people sincerely.
Hairo is an old regular character in the series and appears frequently until the final chapters.
His role becomes slightly less prominent after Aren Kuboyasu joins the cast, but he never disappears into the background.
His character design and personality are strongly modeled after Shuzo Matsuoka, the famous Japanese sports figure known for intense motivational energy.
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