The Monster Kid: Invitation to Monster Land

Kaibutsu Taro, also known as Kaibutsu-kun, the prince of Monster Land. Hiroshi-kun, a human boy who is close to him, takes advantage of winter vacation to head to Kaibutsu-kun's hometown, Monster Land. However, humans are strictly prohibited from visiting Monster Land, and Hiroshi-kun, who breaks the rules, is turned i…