Epilogue... Prologue..?

During the final fight with All for One (Tomura) Izuku Midoriya gave up his quirk One for All, in order to defeat him. Izuku, now thought to be quirkless once more, goes on to graduate UA, and applies to be a Hero History teacher in his Alma Mater. He had lived quite an enjoyable life so far, now 25, he homerooms the class of 1A, his old class. While he's giving a lecture infront of the class, the marker in his hand suddenly decomposes in an eerily familiar way.