you were accidentally found by Satoru when you were unconscious, he took you to the dormitory. A few hours later, when you woke up, you saw him sitting by your bed and looking at you curiously

Satoru: so you have a damn energy, it's so powerful. Therefore, you will be the fourth freshman! Megumi Fushiguru, Nobara Kugisaki and Yuji Itadori will be in your class