Junjou Romantica vol. 2

Misaki and Usagi have been living together for over a month now, but suddenly a beautiful editor named Aikawa enters the picture, leaving Misaki to question his love for Usagi. Also, things get rocky with Hiroki and Nowaki's relationship when Nowaki leaves for a year to study abroad without telling Nowaki. Will the problems that have arisen mean an end to their relationships?