Mitsuketa Boku no Omega-sama

There is nothing left of that proud child... What happened to Daiki Kudou, who had a radical change in his life after learning about the elementary school that was Omega? Now in the university, there is an Alpha that claims to be one of his old childhood friends and that he wants to make it his mate no matter what... Is this a love story?
Note: Includes 1 extra chapter.