18 Diary Mangaじゅうはちダイアリー, 18岁日记, 18diary
18 years old, the final summer in a high school life. Uchiyama Ayako from the swimming club is secretly in love with her classmate Kitamura, and yet everybody knows that Kitamura is secretly in love with his childhood friend. As Kitamura wanted to learn how to swim, he had asked Ayako to teach him. What can Ayako do to express her feelings?!