Kaito Ono faces Marat Grigorian in a high-stakes kickboxing match at ONE SAMURAI 1 in Tokyo on April 29. His unique bond with his father, who also coaches him, plays a crucial role in his preparation.
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Behind every elite fighter sits a mastermind coach. For Japanese kickboxing star Kaito Ono, that guiding voice belongs to the man who raised him.
The featherweight standout brings a lifetime of shared sacrifice into the ring when he clashes with Armenian striking icon Marat Grigorian.
That high-stakes kickboxing showdown takes place at ONE SAMURAI 1, which broadcasts live from the Ariake Arena in Tokyo, Japan, on Wednesday, April 29.
As Kaito prepares to face one of the most feared kickboxers in the world’s largest martial arts organization, he leans entirely on a highly unusual training dynamic.
Unlike traditional camps built around established trainers, Kaito’s head coach possessed absolutely no formal combat sports background. When the young athlete first discovered “Glove Karate” – a version of karate utilizing boxing gloves and full-contact strikes – his father decided to embark on the journey alongside him.
Driven by an obsession to help his son succeed, his dad relentlessly studied fight footage and taught himself the intricacies of the striking arts. Decades later, that self-taught dedication continues to steer the ship.
Kaito recalled:
“When I was young, my mother wanted me to be involved in sports, and I took up Glove Karate. From there, I started to train constantly.
“My dad also learned along with me. When we started, we both didn’t know much about fighting. My dad never did any martial arts. But my dad was very determined to learn so that he can help me train, and he is still my coach to this day. He is a very valuable voice in my corner.”
That meticulous, studious approach could prove vital against a veteran like Grigorian.
The matchup originally materialized last year before infamously falling through due to a weight dispute, giving the father-son duo an extended window to dissect the Armenian powerhouse.
The fight takes place on April 29 at the Ariake Arena in Tokyo, Japan.
Kaito's unique bond with his father, who is also his coach, provides him with a strong emotional and motivational support system.
Marat Grigorian is an Armenian kickboxing icon known for his striking skills, making him one of the most formidable fighters in the sport.
ONE SAMURAI 1 is a live kickboxing event featuring top fighters, including Kaito Ono and Marat Grigorian, showcasing high-level martial arts competition.
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Rather than resting during the delay, Kaito’s dad doubled down on his film study. He crafted a specific blueprint designed to neutralize Grigorian’s relentless forward pressure and expose his openings.
The Japanese sensation explained:
“Since my fight with Marat Grigorian was first announced last year, my father studied my opponent’s style extensively. Then it was cancelled, but since then, we knew we would face Grigorian some time in the future, so my dad continued to study his style relentlessly.
“We know what his strengths and weaknesses are, and my dad has made a strong game plan for me to fight him.”
Kaito’s unbreakable bond with his father forged a level of trust impossible to replicate in a traditional gym. Every combination he throws and every defensive read he executes traces directly back to the hours spent working together.
Navigating the global stage brings intense pressure, but the Japanese star finds ultimate confidence in the voice guiding him. He views his entire martial arts identity as a direct reflection of his lifelong mentor.
The 28-year-old added:
“I believe my father is the one who shaped me into the fighter I am, so he’s everything to me. My fighting is entirely shaped by my father. He’s someone I truly respect, and I’d say he’s a one-of-a-kind trainer.”
To execute that game plan, Kaito Ono maintains a single-minded lifestyle.
While many athletes rely on outside hobbies to decompress from the rigors of training camp, the Japanese star refuses to disconnect.
He embraces a 24-hour martial arts mindset, viewing the constant immersion not as a burden, but as the strict foundation of his success. If he ever steps away from the gym, it will only be to repay the people who built him.
Kaito said:
“My entire life is just all about fighting and training. It’s all I do. I just do martial arts 24 hours a day, seven days a week. Of course, I sometimes go out and have dinner with my friends and catch up. But even then, I am still thinking about martial arts. It is my life.
“I think my family has sacrificed a lot for me to reach my dreams in martial arts. So, I think I would want to take them on vacation and spend some time with them outside of martial arts.”
Before any vacations can materialize, he must handle the business in front of him. Grigorian publicly promised to break through Kaito’s guard and score a knockout in Tokyo.
The Japanese striker hears the threats, but he plans to flip the script and deliver a highlight-reel finish of his own in front of his home crowd.
He concluded:
“It is a very important fight in my career. Of course, I want to make my dad proud. This fight means a lot to the both of us.
“It will not be easy, but I am going to finish him. I think this will be a very exciting fight, and I think it’s not going to go the distance. It’s going to be a good fight for the fans. But I see myself beating him and knocking him out.”