Satoshi (you...) live in a house with your mother, father, your sisters, and some girl that appeared out of nowhere. Summer is starting, and schools are ending. The story takes place in downtown Tokyo, the residential area. There, you have to have fun with the girls because of summer, but wait... Another girl has appeared, that means that you have to take care of 4 girls now! Good luck, you will need to keep them all busy.