In this world, there are humans without beast ears and humans with beast ears called Bestia. Sougo and Akira, a happily married Bestia couple, live blissfully with their ever-growing family. Things stir up a bit when Sougo's half-brother, Kazuhisa, makes his appearance and offers Akira to produce an offspring with him, much to Sougo's annoyance. What will Akira do? On another note, while the interaction between Nurse Kirigaya and Doctor Kurosaki is the same as ever, Kirigaya can't deny that Kurosaki is growing on him. Even their co-workers assumed that the two were a couple more often than not. But there are reasons why Kirigaya is reluctant to return Kurosaki's advances. Will Kirigaya be able to open his heart to Kurosaki?