The small wrestler ran all of these ideas in his mind over and over while he was changing into his wrestling outfit (clothes that he borrowed from his sister, making him look even more girly) and stepped into the fight.
Spoiler

The song guaranteed a huge, intimidating badass to the public, so one can guess all of their surprised faces when cute little Daichi made his way to the ring instead. He actually found himself blushing embarrassedly as he heard some whispers and giggles, even so, some other people kept cheering him on, so Daichi still felt like he should turn to the public to smile and greet them.
After he finally made his way to the ring, he hopped in, rather clumsily and waited for his opponent.