コンビニ強盗から助けた地味店員が、同じクラスのうぶで可愛いギャルだった

"Do you want to stay at my place… for tonight?" Kuramine Riku, a second-year high school boy, is feeling down after getting dumped by his childhood friend. He enters a convenience store and happens to save the store clerk who was being attacked. The clerk is Ayana Hoshimiya, the most popular and beautiful gal in school. The incident causes Hoshimiya to tell him about a stalker, and the two of them decides to live together so he could protect her...? (Source: Fantasia Bunko, translated)