Rattled after narrowly escaping an upperclassman's twisted threats, Seo Haebom resolves to keep his head down and focus on his schoolwork. He's determined to secure his future and protect his relationship with his boyfriend, Jo Taesung. But Taesung can't help but feel insecure when Haebom spends all his time studying with other classmates. Just when the couple finally gets a chance to enjoy a date, their secret is discovered by the last person in the world they want to find out: Taesung's mother, Ms. Ha. Will she give the boys her blessing, or will this be the end of everything Haebom and Taesung have fought for? Volume 4 includes episodes 47-65 of the webcomic Cherry Blossoms After Winter.