"Tonari no Kaibutsu-kun," also known as "My Little Monster," is a Japanese manga series written by Robico. It follows the story of Shizuku Mizutani, a studious girl who prioritizes her academic success over friendships. Her life changes when she meets Haruka Yoshida, a troublemaker who is often misunderstood. The series explores their developing relationship as they navigate high school life, friendships, and personal growth. It combines elements of romance and comedy, highlighting the contrasts between Shizuku's serious nature and Haruka's carefree attitude, ultimately showcasing the importance of connection and understanding in relationships.