Spider mnnnnnnnn was just swinging about, looking out for trouble just in case of emergency.
Spider man, aka Deku saw Katsuki-
"Why is he out so late?"
He said to himself before swinging over the katsuki.
"What are you doing out here so late?"
"Uh-I'm heading home-"
"Why so late though, you go to college here?"
"Nah. I don't take college-"
"So then what's the excuse for being late?"
"Oh-I just finished shopping, thats all."
He had a shit-ton of bags in his hand-
"Well, I could help you get him with them.."
"What do you mean?"