Miki Koishikawa lived a normal life - until her parents tell her they'll get divorced.. She doesn't agree, until she meets Yuu Matsuura... the handsome son of another couple, with whom her parents are switching spouses. They all live together now in an enormous house, and Miki and Yuu find themselves falling in love. They'll have to struggle with their own feelings, other people who want to be with them, and whatever Lady Luck and Fate throws in their ways...
from the start to the end the story almost all about love triangles among the characters, some get resolved, some don't! it would have been better if the characters were more focused on their own relationship than their crushes! and although Yuu promises his love to Miki, he's too much of a composed characters and I don't see him refusing other girls out right! anyway at times I was very annoyed with the show, but the animation is good and cute and I just wanted to see what happens in the end. I don't really recommend watching it though! 76 episodes is too long for a story like this!