A Condition Called Love 5 (manga)

Hotaru and her boyfriend, Hananoi-kun, prepare for the beginning of their second year of high school, and their feelings for each other grow stronger by the day. Just as Hananoi-kun begins to show signs that he's ready to come out of his shell, Yao-kun, his rival in love, discovers his secret, and he's determined to make him come clean to Hotaru...