Of course, I'll keep the system messages in brackets. Here's the revised text:
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[Your STR has been Increased By 5.]
[Your Mana has been increased by 2.]
The once fiery and menacing black mutant now lay lifeless on the ground, a stark contrast to its former menacing presence. It rested upside down, its head several inches away from its body.
"To say the truth, I didn't believe you until my sword made contact with its nape bone... it's truly surprising to see that a monster with such weak bones..."
The woman before me nudged the other side of the chest, still meaty, while she spoke with me. "Anyway, I am Theca! A squad captain from Strom guild. And who are you?"
Her question slightly surprised me but also felt good that she didn't recognize me yet.
"I am Lucas, a mercenary."
Even before I finished my lines, the girl summoned one dagger and started to rip off the smelly skin from its body.