Sakura Shirogane is a pure-hearted girl who is not knowledgeable in sexual matters, and as a result, she believes in certain myths and misconceptions. One of these misconceptions is the idea that a kiss can lead to pregnancy. Being a member of a club that discusses sexual topics, she often finds herself lost and confused about the meanings behind the conversations of her peers. In order to better understand these topics, she decides to seek help from her teacher, Kuroda-sensei. Sakura is nervous to ask such questions, but she knows that Kuroda-sensei is a trusted adult who can give her the answers she needs.