Stakeout at the locker and try to catch the person!!!

You go straight to your locker the next day.  Three of your "siblings," Mizu, Felix and Mei follow you there.  

"Whatcha doin'? "Asks Mizu.  You tell her it's nothing much, really.  You shouldn't've, as now she gets even more inquisitive.

"Why won't you tell me?"  She bounces on the balls of her feet.  "It's a secret, right?  Are you meeting someone here? Are you meeting your secret boyfriend?"

"Leave poor Mina alone," Jordan sighs.  "She doesn't need a rainbow on overdrive finding things in her private life that aren't there."

"Let's just go, Mizu," says Mei, but she looks at you in a peculiar sort of way.  As if she's threatening Mina, but not in an angry sort of way.  You knew the least about Mei out of all the other orphans, and this unnerves you.

Mei and Jordan head to class, but Mizu stays.  Two students hop off the stairs next to you.  One with piercing turquoise eyes and hair to match, the other with curly brown hair and a shirt that reads, "What a terrible idea.  What time?"

The turquoise one turns and looks at you and smiles.  At this moment, you feel yourself getting woozy.  Your eyes flutter closed and you crumple to the ground.  You recieve a vision.  There is low light.  You are on the ground, looking up at the same girl.  You find you can make out bars, prison-style bars, in the background.  The vision fades into darkness and you drift into sleep.  When you come to, you are in the nurse's office.

What will you do? (You can also choose to become a different character.)

I will try to spy on the girl the next day. 

The next day at school, you quickly locate the girl and follow her discreetly.  You find out her name is Julie Sycamore, she's a grade ahead of you, and she lives two blocks away from the orphanage.  Her interests include tennis, computer science, camping and guitar.  She's bubbly and outgoing.

At lunch, you sit down with your "siblings" Emerson, Surayah, Mei, and Mizu, a table over from Julie and her friend (who's name is Sarah.)  Eavesdropping on their conversation about Genshin Impact, you take out your lunch and find a note inside.

Hi again, Mina!

You tried to catch me, but clearly, you failed.  You had another little "episode," did you not?  All that fainting is out of the ordinary.  Won't you tell me why?  Epilepsy?  Some sort of illness?  Or maybe something more... unusual?

By the way, I found something at the library that might interest you.  Here's an excerpt:

"Spirits, demons, gods, magic.  Do they exist?  No one can tell.  However, more and more commonly, unusual incidents are being reported.  For example, in Massachusetts, a five-year-old boy predicted his mother would be robbed.  Two hours later, on her way to work, she was.  In Wyoming, a sixteen-year-old claimed to witness her friend grow an oak tree from a seed in a matter of minutes.  In Australia, a kangaroo was caught on camera seemingly flying, while a man "directed" the performance with waves of his arms.  There's no proof that these stories are true, but more and more people are coming to believe in the existence of magic."

Mean anything to you, my friend?

Mystery

You can become any of the characters mentioned, or stay Mina and choose to do something.