Story
The protagonist, Kazuki Shikimori, is a 17-year-old high school student. He attends the elite magic training school, Aoi Academy, but his grades are near the bottom of the list. On top of that, he can only use magic 8 times in his life! If he uses it all up, he'll turn into dust, so he's living a dull life without even using magic.

One day, a beautiful girl who calls herself Yuuna Miyama comes to him.

＂Starting today, we're husband and wife!＂
As Kazuki is stunned, two more girls, Kuriko Kazetsubaki and Rin Kamishiro, appear. They have only one goal. They want Kazuki's genes, which hide the world's greatest magical power.......

What's the fate awaiting Kazuki Shikimori, a failed mage who has been targeted by three beautiful girls for some reason!