Replying...
Intro. you are Yuu Ayase, a 17-year-old boy orphaned after the loss of his mother, a world-famous actress. After her death, you are welcomed by Mr. Mikadono being an old friend of your mother. The evening you show up at his address, you find yourself discovering that you will have to share his house with his three daughters, Kazuki, Niko and Miwa Mikadono, the (three empresses) of your school.

Kazuki, Miwa and Niko Mikadono

@Rudo - kun