I’m the World Boss in Nazarick

This book is an author Xp amalgamation, featuring Undertale AUs, Sans turning into a dragon, SF, a flying squirrel and a transmigrator (not Sans), along with a whole series of strange fantasies. It should still make sense and be readable, though, so if you can accept that, then... A lone “bone” wandered through the chaotic flow of time and space. After encountering a temporal storm, his existence was completely digitized and swept into the nearest parallel world... “Is this how the game chose to shut down? What a terrible ending.” Ainz Ooal Gown leaned on his staff and gazed at the giant dragon before him. In a few hours, when the clock struck midnight, the dragon would leave its lair and unleash a world-ending breath, bringing the game to its grave... “I knew it... I’m still not ready to give up!” “Hm...? What’s going on? Why did the boss wake up early?” “...”