"Then the feet starting getting itchy, going to these shows and watching everyone else fight.
"Everyone at the gym uses the song I had - Here I Am/Small Axe by UB40 - and every time I heard it come on it just gave me that feeling. I just thought 'Nah, I'm jumping back in'."
The tournament pits New Zealand and Australian fighters against each other in a transtasman showdown.
Kara enters with a nine win-six loss record, with Pahi at 9-3.
Fights consist of three three-minute rounds under K-1 Kickboxing rules.
They are similar disciplines, although Muay Thai uses elbows, knees, kicks and punches, and kickboxing involves punches and kicks only.
Lee Kara (right) in action against Moe Hussain during Night of the Assassins 3 in 2018 - the last year he was in the ring. Photo / NZME
Kara said a good comparison was rugby union (K-1) and rugby league (Muay Thai).
"Union has more traction in terms of media coverage and popularity, and league is more of a minority sport.
"That's the same with K-1 and Muay Thai, and opportunities are bit better in K-1 at the moment as well.
"With Muay Thai included in the next Olympic Games [2024], that will definitely help grow the sport nationally and globally though."
Kara said King in the Ring was the pinnacle of striking sport in New Zealand, especially when it came to K-1 and Muay Thai.
"A lot of big names have come from that promotion and a couple of former Kings have moved on to UFC [Ultimate Fighting Championship] contracts, like Israel Adesanya and Dan Hooker."
Former Whanganui resident Adesanya claimed the King in the Ring title three times in two weight divisions.
He is the current UFC middleweight champion.
"For me, I'm more about stand-up striking, so I would be more interested in going to something like One Championship or other kickboxing promotions," Kara said.
"You've just got to treat your next fight like it's your last fight. You can't think too far ahead."
Whanganui cruiserweight fighter Haimona Tamati will be the first from Whanganui to attend the World Kickboxing Association World Championships when he makes the trip to Wales in November.
Tamati, also a product of Awa Kings, is set to compete in both glory rules kickboxing and full Muay Thai at the event.
The King in the Ring tournament can be watched live on TVNZ+ from 7.30pm on Friday.