In Natsumi Love Story, as the main character, you're just an average male student. Your childhood friend, Natsumi, is the only one living with you because both sets of parents are rich and took a long vacation abroad (not great parents, right?). You and Natsumi, only a year apart, have become very close. Although she often says "I love you", she means it as her best friend (secretly, she's in love with you but afraid it will change things). One day, she decides to confess her feelings straightforwardly. Don't worry, she's cute, and you secretly have feelings for her too. After all, who wouldn't want to be the target of someone desperately in love?