Oh, a first year. Might be a bit rough on ideas on my end (mine are all 14+) but I'll do my best
Akira and Chloe Stewart - She's half-Japanese (as is her sister), so I figure the heritage in common could serve as a decent excuse, if only for a rare sense of familiarity. As for how they could hypothetically meet, Chloe is an excellent tutor (if overworked) so it's possible that Akira's gotten referred to her in the past if he ever has any problems with school. That being said, she has a bit of a standoffish composure, so I can't guarantee whether they'd get along or not.
Akira and Meadow Richards - Another one with a big age difference, but she's a senior Flinders. Given that they're in the same house, she's a safe person to go to when something's wrong; knowing her, she'd take Akira under her wing quite easily. While initially nice, her behavior becomes a bit rough to those who get closer to her out of sheer concern. Hopefully he wouldn't take it the wrong way.
Akira and MJ Clarke - My second Flinders. She's a fifth year on the quieter side of things and a bit of a worrywart, but should Akira not care for things such as reputation he'll find that she's quite approachable. I don't have much in the way of ideas for this proper, it's just likely that they know each other due to the House they have in common.
Akira and Laurie Kempf - They've already chatted on QuillBook, so why not make an actual thing out of it? A bit of a questionable person in terms of morals, Laurie is a pretty chill individual that wouldn't mind hanging out with a first year at all; problem being she can be a bit of a bad influence at times if left unchecked, as seen by her suggesting Akira to prank his brother back. On the other hand, by hanging out with her he might pick up on a thing or two that he likely wouldn't have learned otherwise.
Akira and Ian Travers - My third and final Flinders (for the time being anyway). Also a fifth year like MJ, he's more the type to get in your face if he sees you need help. It's likely that he's done this to Akira before. He's an excessively cheerful guy, so be prepared for diabetes.
Akira and Brooke Outerbridge - She knows everyone, and probably knows Akira - even if he doesn't know her. Too much of a social butterfly for her own good, I'm suggesting her because she's presently the closest in age in my roster to him. Maybe something can come out of that?
I have many more characters, feel free to come up with your own stuff too!