Mou Hasamazu ni wa Irarenai♥ Hoshi ni Onegai shitara Konnani Okkiku Nacchatta!

Synopsis

An alien crashes into Amano and while fixing her body, makes her smarter, more athletic, prettier, and increases her bust size about five cups by accident. The alien then requests to monitor her, since he came to Earth to monitor humans anyway. The alien eventually manipulates Amano's body.