Second-year high school student Riku Kuramine was desperate after being dumped by his childhood friend when he happened to enter a convenience store and saved a clerk who was being robbed. The clerk was Ayana Hoshimiya, the most popular and beautiful gal in school. This incident leads to Hoshimiya consulting him about a stalker problem, and the two of them decide to live together under the guise of protecting her who lives alone. ( I feel safe when Kuromine-kun is around ) ( Wake up, I made breakfast for you ) ( Would you like to eat with me? ) ( I can't... ( I can't stand it ) ( Wow, Kuromine-kun, you really worked hard... ( You've lived your whole life, haven't you? ) While living with Hoshimiya, Riku regains his zest for life. A sweet and dazzling love story between two tearfully earnest loners.