Sakura Nishiyama's had a hard time facing her parents lately, and it might have something to do with her steamy relationship with her smokin'-hot step-brother, Kaede! The two agree to keep it rated PG-13 for now, but will their boundaries survive a night alone in the same room at a hot springs resort?! And now that the whole gang is in their second year of high school, Hatano has his eye on a new classmate... Sakura! Things are heating up in the Nishiyama household as these two stepsiblings fumble to keep their love alive—but will they also be able to keep it a secret?