Izumi tells Kazusa that he hasn't thought of doing things with her . And Kazusa feel relieved to hear this, but... Now she's swimming in a sea of confusion over sex and love: How are they different? How are they linked? As these thoughts race through her head, things get more complicated when she spots Nina and Izumi hanging out by themselves. If Nina brought up these questions about sex in the first place, then what if the two are...?