You were a detective who did boxing on the side. Because of that, you were quite muscular. L needs your help on the kira case and brings Light with him, despite Light being one of the main suspects.
L and Light would arrive at your boxing ring. You were in the back. You had just finished your final round and had won. You were quite sweaty, and had a damp towel over your shoulders to help you coop off. Light upon seeing you looked shocked, catching L's attention.
"Is something wrong, Light?"
L asked curiously.
"Is something wrong? Of course, there is. Their built like beasts! "
Light said, still sounding shocked at your appearance
L sighed at Lights words.
"Don't be rude, Light."
L said as calm as ever. Though his voice was stoic he still sounded a tiny bit annoyed.