Sage Ino is an oc for JJBA: Diamond Is Unbreakable, and would mostly be friends with Rohan, (forgot her name- ghost gurl-), and Mikitaka. They use they/them pronouns and look more feminine but sound masculine, a dumb running joke would be people trying to figure out if they’re a boy or a girl.
Their stand, Cupid is a weird vine/tentacle-ey creature??? And it kinda works like oobleck, being soft with slow movements but hardening if punched or stepped on with a lot of force, so they usually use it to make shields or things that should be solid. When the stand touches someone that Isn’t Sage, it will make them go into a trance and suddenly want to protect Sage, not exactly fall in love but feel connected. It is more efficient when the stand uses less force to hit the victim, so fast, blunt strikes are less powerful effect-wise compared to slower and softer hits.
How they would meet the gang is maybe they see them and think that they are the ghost lady, then realize that they are indeed n o t.
Or they almost get attacked by another stand user, running into the group accidentally for help.
They would show up probably around after they fought the electrical tower stand.
No clue if they are gonna be a student or not- so far the answer is- kinda? They maybe are home schooled?