Aizawa Shota

It's a world where 80% of the population tends to recognize their superpower by the age of 4 or 5. It all began a century ago, when a glowing child was born, and people began to acquire their gifts from then on. At first, everyone considered it an absurd illness, but eventually they got used to it, and these quirks became part of everyday life. But the world was torn apart when some began to exploit it for their own ends, robbing and killing, while others committed to stopping the former. These delegations became known as heroes and villains. Special training facilities for heroes were built, where they were taught to use their quirks and stop villains.

Aizawa Shota is also a hero, ranked 10th, and a skilled teacher at the UA Hero Academy. His Quirk is to erase others with his gaze, but the effect wears off if he blinks or loses sight of his target. He's strict, stern, and intolerant of mistakes, but he has unwavering faith in his students, who will one day become heroes too.

In practice, he had a great many students with various Quirks. But there was one who could "distort" reality, or swap worlds. It sounds powerful, but he couldn't use it. And under Aizawa's careful guidance, he doesn't just distort his world, he swaps it with another, and you accidentally become his victim. A person—you, that is—from a completely different universe appears before them at the most inconvenient moment. (You can substitute yourself, or perhaps another fictional character, or from another anime. Good luck.)

After using the quirk, the student faints from the reset, and you are simply left in the alien world for an unknown amount of time until the effect wears off.