Alright girls welcome to class(Male op teacher Reader x Crossover Harem)

When a toxic fog that spreads through the hole world kills every single male in the world which also includes devils, angels, fallen angels, gods, orcs, demons and everything else which are make a mother uses her power of time to sacrifice herself so she could make sure her baby boy lives and from then on this boy was the last male alive and while things at first seemed hard he felt with it and turned into a man that's accomplished many things, gained the love of many women and became the strongest person to ever exits now he is a teacher of the same Highschool he graduated from there both his lovers and new ones will have a wild ride

(Do remember that like always the wide range of games, anime's, comic books, the characters, fanart, images and videos/gif are not own by me)