Manga by author Moegi yuu - Status ongoing

Ever since his mother passed away, Hinata has been taken care of by Midori, who is as strict as he is caring. Midori's smart, and tall, and handsome. He also doesn't have a shadow or a reflection in the mirror. Wait What? Hinata's a scaredy-cat, and thinks Midori might be a ghost. But he is in fact a?

From Blissful Sin:Haruka is good-looking and popular, but quite the devil. Tokiwa is a quiet and shy loner. After their chance encounter in Katekyo!, the unlikely pair have begun dating. Though he was aware of Tokiwa's reticence, Haruka is beginning to feel frustrated with the pace of their relationship. What will happen to the pair when Haruka begins to question his senpai's feelings?