It's Ninisanni Scenario! An unsanctioned, unfiltered high school dating simulator for the modern literary connoisseur, featuring the lovely ladies from Nijisanji EN!
MC-kun is just starting his second year of high school, but he's like, super depressed after breaking up with his supermodel girlfriend. But then, in a stroke of fate, a fairy godmother appears before him! Apparently, he's altered his future by breaking up with his girlfriend, and if nothing changes, he's set to be childless for the rest of his life! Oh no!