I think the author is either a prankster or has mental problems if he decided to make a story about a guy whose goal is to hold a woman's boob and kiss a girl... who accidentally pukes in his mouth.
The characters are very colorful, as is the concept of the universe, but the pubertal pursuit of such "achievements" and the death of Himeno let me know that the manga will be the "Game of Thrones" of the world of Japanese comics.
Either way, the anime looked interesting. Reading the manga is a matter of time for me.