Mayumi ko 1

Mayumi Shinya seriously train for few months before her debut match. She puts everything into muaythai as if she no longer have any other goal in her lifgreater than working all the way up to certain rank where she can officially challenge and Irin Lee. 

She make a statement by  knocking out her first opponent who is older and have more experience than her within the first round.

"Wait for me Irin Lee, I'll make you pay for what  you've done to my older sister" she always say this sentence after her punch. Which Irin choose to ignore or say "fighr against Minami is probably the most difficult match ever, I hope her younger sister will be as challenging as Minami"