Himegoto no Ura ni wa

Suzuta the nurse is currently living together with his half-brother Leo, Bobo the cat, and Yoshiyuki. One day, Yoshiyuki tells Suzuta about Leo's daycare friend Hiroki and his handsome older brother Katsuki, sending Suzuta spiralling with worry. Things only get worse when the same Katsuki ends up at the hospital where Suzuta and Yoshiyuki work... how will their relationship change now that a new pretty boy has entered the picture!? The third book in the Behind His Smile series. (Source: Renta!) Note: Includes three extra chapters.