From Blissful Sin:

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…?

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?

Rintarou is bothered by the throbbing of his heart caused by his tutor, Kaede for unknown reasons. One day, Rintarou finds out that he's actually in love with Kaede when he was receiving H punishment!

But, without knowing Kaede's feelings, Rintarou became anxious and--?!

Little sadistic home tutor x natural high school student's after class love.

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Includes the following short stories:

V.1
? Complex 17
? Koi no Hajime wa xxx!?

V.2
? Yuuutsu Trickster (Melancholic Trickster)
? Bangai-hen/Extra