Boyfriend, Sometimes Girlfriend, Volume 2

This is volume 2 in the series. Akizuki Hotaka, a high school student who has just turned 17, meets and falls in love with the school's madonna, Shishizaki Chisato. Hotaka was prepared to have his heart broken, but Chisato agreed to become lovers. However, Chisato has a secret that Hotaka can't imagine. Love changes "everything" for a boy.