When your mom tells you she's going to remarry, you feel nothing but happiness. That is, until you find out who she's getting married to! The new man in her life has three sons, one of whom you've known since you were a child.

Meet Miri — A childhood friend who has known your family for the longest time, Miri holds complicated feelings about the new family. It seems that he cares deeply about you… But as a friend, or something more?

Meet Kiko — Yayoi's fraternal twin, Kiko is the polar opposite of his brother. An exemplary student who struggles with people, he’s the type to spend hours worrying about a single text message. Still holding adoration for his mother, it might be difficult for him to accept the new living situation…

Meet Yayoi — Lively, upbeat and friends with everyone at school, he’s sure to brighten even your darkest day. His boundless energy sometimes gets him into trouble, but he always bounces back. If you get close enough, you might even find out why he's always so positive!

Your everyday life has gone from dinners alone in front of the TV to fighting over who gets to take the first bath. But this new life isn't all bad, especially considering how handsome your new step brothers are...