Dakara Boku wa / So I can't Play H is a lighthearted, fun, easy to watch light-ecchi anime. The main character Ryosuke is a lewd lad and not only he thinks about erotic stuff all the time, he blurts what he thinks out, too. The story revolves around a Shinegami coming to Earth to meet him in search of The One, and several ecchi shenanigans pursue this encounter.
As to why I recommend this show, is the same as why I enjoyed watching "Renai Flops": they are both fun shows with likeable, cute, fun to watch, and funny main characters. You end up wandering what is to happen to Ryosuke and htat's a great feat to achieve in an anime.