This is the latest charage from Hearts, a company specializing in 'yurufuwa' charage with nakige elements.  This company's works have a tendency to make me want to puke waves of sugar, but, in my experience, this is one of the better 'yurufuwa' companies out there. This game focuses on a kind-hearted young man named Harutoki Narumi as he suddenly (and by accident) summons a high-level spirit named Haruharu, and, as a result, he gets dragged into the world of witches and magic users whose du