The 100 Girlfriends Who Really, Really, Really, Really, Really Love You Vol. 1 (manga)

Aijo Rentaro has asked a hundred girls out and struck out every time. In desperation, he prays for guidance, only to be told by a god that his rejections were due to a cosmic mishap! Now this god will set things right by making sure Aijo gets one hundred dates. Except, as things often go with gods, there’s a catch: each of his one hundred dates is Aijo’s destined soulmate! Worse, if he doesn’t return their feelings, they’ll all die in horrible—and hilarious—accidents!