After speaking, her figure disappeared from its original position, and then a small fist appeared at the person's chest. It looked soft and tender, but produced an explosive sound as if the air was rapidly compressed after hitting the person, sending them skyward.
But before they could fall, Sister appeared above them, her feet stomping down straight on their back. With this force, they were driven towards the ground like a meteor, shattering their bones that could even withstand the Black Dragon on impact.
Upon landing, a crater-like formation appeared on the ground. Sister stood at the center, with the invincible being below her foot.
"Ah, my new dress!"
She saw a big black stain on her new dress, angrily kicked the person below her. He crashed into the crater's wall like a broken sandbag, flipping up a large piece of earth.
Despite being beaten so badly, that creature's life force was indeed vigorous. He crawled out of the hole with a smile on his face.