On spring break, Daisuke heads to a tropical island. Turns out, his female cousin and a couple of his girl friends are also there. What do you get when you put them all together with a bunch of teenage hormones? A harem. It's always a harem.
Ayame and her sister know that their dad's been lonely ever since their mom left home. Like any good daughter, they just want their dad to be happy and help in any way possible. And we do mean, Any. Way. Possible.