Katsuki then froze- shocked-
"What the-"
Ren then saw Peter- he had to make a plan...quick. He went back to the library, he saw... bricks. There was also a glass table.
".......Is Ren still here..?"
Renny was making a plan- cause he had no clue that Katsuki knew Peter was there- Ren started stacking the bricks on the glass table, once he had put about..7..he pushed off one of the bricks, making the glass table shatter. Katsuki heard it cause it was..pretty-pretty loud.