Haruo Yoshikawa always thought he was your average run-of-the-mill middle school student: great attendance record, no real plans for the future, and three adorable, loving sisters, Maika, Chiaki and Fuyuno. Perfectly normal, right? Wrong! What Haruo doesn’t know is that his three sneaky sisters have been keeping him in the dark about a little family secret: they're all magic users! In the blink of an eye, Haruo's "normal" life does a 180 degree turn into the insane with the arrival of the enchanting Ayumi, who for some reason seems very interested in turning Haruo into a "real man" ...as well as awakening his dormant powers!