女子高生・初(堀)和哥哥・凌(間宮)以及妹妹・茜和父母住在一起。某日被住在同一间公寓的橘亮辉(清水)抓住了把柄,被亮辉无理的命令来回折腾。在这时,数年前搬走的竹马・小田切梓(板垣)回来了。初被梓一如以往守护着自己的样子自然地吸引,即使被亮辉不断从中阻碍,初还是同梓交往了,但其实梓怀有着不为人知的目的。此时,初也知道了凌的秘密…Hatsumi and her family live normal lives until she is used by Ryoki who begins to bully and intimidate her. Azusa is a friend in the area and also good looking. He has the hots for Hatsumi too. They begin to go steady, but soon it transpires that not everything as easy or straightforward. Time to unravel the mystery.