"Mhh..."
His ears perked up towards Bakugou, even while he was still asleep
Ren then walked over to Bakugou, and tapped him. Turning him invisible. Bakugou then leaned down, and bit Lukas's neck. HARD.
"NGHHH-"
His eyes widened and he jolted awake, going to sit up
Lukas was then was pushed back down, someone had grabbed his wrist. He felt sucking on his neck.
"NNN-W-Wh-L-LET GO!"
He kicked and thrashed, eyes wide with fear-he didn't know what was going on and he was scared
(AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA GUESS WHAT I JUST FOUND CROW-)
The sucking then stop, but he still felt someone grabbing his wrist.
(Wut-)
"W-W-What's happening-w-who's there!?"
His heart was beating out of his chest, ears drooped and eyes wide
(I FOUND KINDER ME- AAAAAAAAAAAAAAAAA)
Katsuki then appeared, fangs showing, eyes glowing.
"W....K-Kats....?"
He looked up at him eyes wide, ears perking up towards him in spite of himself
"Hey...you don't need an explanation do you?"
to put it even more detailed..there was blood on his lips and on his fangs- that should have made it clear.