Poor student Ikumi Amanume through a series of strange happenings, finally found a great way to supplement his income by becoming the housekeeper for his next-door neighbor, Yuuji Touno, a notable scenario writer.

Life seems pretty good except for the little problem that Touno tends to get too involved in his work and actually lives out the different characters that he creates! So Ikumi's head is kept spinning by the parade of extreme personalities that he encounters, especially when he starts falling in love with the real Touno, who never seems to hang around long enough...