The World's Number One Mage

(Western fantasy) After closing my eyes in the hospital, seriously ill, I somehow turned into a little kid again?! This time, I get to live another life, and I'm going to enjoy it properly.

What, magic in another world? I'm learning it.

What, an amazing magic academy? Advanced study was my dream in my old life, so I'm going.

What, a bunch of weird, tsundere classmates? So what if they're tsundere? That's great. At least they really teach me useful stuff. I like them.

What, ordinary everyday life? Do you even understand how precious each and every ordinary day is? I'm enjoying it.

What do you mean everyone's suddenly graduating? Noooo! Don't let my magic academy life end so soon! I only just started learning the real stuff... Oh, it was just my dream. Well, never mind.