What happened when a group of 'street fighters' challenged a former kickboxing champion

A group of 'street fighters' interrupted a training session and challenged former kickboxing champion Rukiya Anpo. Things didn't end well. Check it out below:

The 'street fighters' stormed the gym and interrupted the sparring session between Anpo and Kosei Yamada.

They then challenged former K-1 Super Lightweight champion Anpo to a fight.

The Japanese fighter - dubbed the 'Demolition Man' - lived up to his moniker and dished out a beating to TWO 'street fighters'.

Anpo battered his first foe, landing a series of leg-kicks - including a brutal front kick that landed flush on his opponent's face, which he followed up with a vicious punch.

Image: Beyond Kickboxing

He then dropped him with a left high kick.

Onto the next 'street fighter' - Anpo targeted the next fighter's body, delivering an assault to his mid-section - eventually dropping him with a sickening body shot.

Naturally, the video of Anpo's annihilation sent social media wild.

One Twitter user wrote: "That kick to the face was absolutely beautiful."

A second tweeted: "This is what happens when you challenge a pro fighter to a fight."

A third added: "Body shots were nasty!"

Another commented: "Second guy landed a pretty good shot on the fighter in the very beginning of their match. Worst mistake ever."

Moral of the story; don't challenge a professional fighter to a fight.

These 'street fighters' certainly learned their lesson.