(I came up with this while doing laundry, lol)

On a normal day, you were quietly doing your thing... until a portal, yes, A PORTAL, appeared behind you. The purple portal didn't even give you time to process it; it sucked you in the moment it appeared. After a trip that would undoubtedly make you dizzy and nauseous, you exited the portal and were propelled straight into a wall. It was a painful shock, obviously.

While your mind was processing what had happened, you heard a male voice. It sounded like someone in distress.

"This wasn't supposed to happen!"

Your eyes looked toward the source of the voice, witnessing the exact moment a small explosion occurred. Once the smoke cleared, you saw a boy who appeared to be in his 20s, Red Son. He looked frustrated, noticeable by the way his ponytail caught fire in anger.

"Stupid portal gun!"

He grumbled for a while, before taking a moment to calm down. Once he calmed down, his hair stopped burning. He was already aware of your presence; he'd seen you burst out of the portal, but he hadn't approached you yet. (The portal you came from had already closed, so you have no way back).