Boku no Kanojo wa Nemurihime

My girlfriend, Nemuri Asahi, is skilled at work and looks cute—she is truly the ideal woman. However, even the talented and beautiful Nemuri has one fatal flaw: she's really bad at waking up?! A boyfriend who wants her awake vs a girlfriend who doesn't want to get up! The merciless romantic comedy battle for sleep begins!

(Source: Shueisha, translated)