Yuu Ayase is a high schooler who struggles to live up to the legacy of his late mother, an actress. Some time after his mother's death, Yuu is taken in by the wealthy Mikadono family and starts living with three talented sisters: The rookie actress Kazuki, the rising martial artist Niko and the Shogi prodigy Miwa. As the four spend time together as a family, the three sisters warm up to Yuu and develop romantic feelings for him.

[Source: Wikipedia]