Alright, some considerations on Class B chemistry between paper girl Shiroko (sketch) and her colleagues. These are of course just my personal notes, not statements.

Aoi (Venus) - Of all the characters, I feel like she is the most likely to be friends with. Shiroko's laziness ought to make her less draining to an introvert, someone you can just chill with.

Kaguya - Uh. Right, this is a bit complicated. On one side, Papergirl is a big comic, anime and trivia nerd, so there is that, on the other, she is ulta-lazy and weak which would be conflicting, however, she has a lot of experience in dealing with people who expect her to do better, plus Kaguya might be so energetic she just overpowers Sketch's ability to complain.

Anna - Probably neutral, maybe not the best opinion of each other. Shiroko is a bit of a smug brat so Anna calling her off for that or being lazy might just set up a wrong foot.

Tropica - I am torn, there are elements for them to not like each other, on the other side, Shiroko not fawning over heroes might also make her more bearable for casual conversation

Kira - Probably on good terms? Friendly? Shiroko wouldn't judge her for being irrational at all, just tease a bit.

Sasuke - Absolutely no prejudice over the lack of quirk from Shiroko, but she might tease him over the logical mindset and sometimes be a bit more emphatic and tell him to take care of himself and not study too hard.

[@Lord Indra] As far as meeting location, one likely location would be in the library, on one side a boy overworking and studying into the night, a dumbass paper girl who slept on a pile of papers in the afternoon and nobody noticed she was there by the time the library was closing. Before that Shiroko probably had a completely different view of him, but after getting the chance to talk she noticed she was being a bit unfair to him.

Hasaki - It's like they are opposites, his powers are the worst type for her, his prideful personality goes against her vibe, just feels like a bad time. 

Kouseki - Shiroko is very likely to not care about some delinquent fame, she is also the most likely to accidentally stumble upon him caring for a cat as she sneaks around in paper form. I do think it would be neat if she was very casual to him, but that is up to you.