How to practice to get a one hit K O punch easily

Why can't you beat your opponent with a punch?
Why are you hitting the guard or hitting the wrong place and hurting your fingers ？
I'll explain those reasons, as well as how to practice to eliminate them.
I'll introduce you to a secret technique that can widen your vision in an instant.
profile:
Takuma Kouketsu
Kyokushin Kaikan Hasegawa Dojo Gifu Branch Chief
Achievements: Kyokushin World Championship 3 times win (2008, 2012, 2016)
All Japan Championship 7 times win.
The 7th Japanese person to achieve 100-man kumite
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