High schooler Natsuo is hopelessly in love with his cheerful and popular teacher, Hina. However, one day at a mixer, he meets a moody girl by the name of Rui and ends up sleeping with her. Soon after, his father announces that he's getting remarried to a woman with two daughters of her own. And who shows up in tow, other than both Hina and Rui?! Natsuo's outrageous new life starts now!
“I’m going to hate you from now on.” After Rui finds out Hina and Natsuo are dating, she resolves hate Natsuo?! With mixed feelings all around, the stage moves to Okinawa for a drama-filled school trip! Hina’s swimsuit gets carried out to sea, Al resolves to confess his love to Rui, and Natsuo and Hina finally spend their first night together…