Big Mouth

Single (Softcover) Cyzo / ■ "Big Mouth" is not just a bluff.

■ Even if you lose, even if defeated, you keep standing—.

This passionate book tells the story of how martial artist Koji reveals his true self in his own words and built the 'Koji' brand.

This is not just a record of combat achievements.

It contains the strategies and philosophy of a man who rose to fame by promoting himself, gaining public recognition, and turning criticism into a weapon. A boy who grew up in an ordinary town in Ikeda City, Osaka Prefecture, was not even good at speaking in front of others as a child. A tense family environment with his father, a longing for strength, and encounters with martial arts.

Eventually, he realizes that not only "winning" but also "how you present" determines the outcome. From matches, press conferences, to social media—he has staged "imperial rule" in every situation, while simultaneously honing his "big mouth" weapon. The transition from K-1 to RIZIN was also a strategy to remain at the center of attention as part of his self-production.

Not only does he fight in the ring, but also his way of facing society, his mindset to turn criticism into a positive, and branding strategies to expand his influence beyond just combat are candidly discussed in his words.

It offers behind-the-scenes insights unknown to martial arts fans, tips for business professionals to survive in a competitive society, and practical examples for young people chasing their dreams to "increase their own value."

This is a record of a man who has even turned defeat into material for self-production and survival strategy. After reading it, you'll probably think this:

"I'll turn my weaknesses into weapons."

"I want to sell myself even more."

How to build a "Koji" brand that can't be discussed by winning or losing alone. The full picture is contained in this single book.