Welcome to Happyland, an extreme amusement park! The Komiya family is not unusual in any way, two parents who love each other and their two children, who are healthy, happy, and accomplished at school and with extracurriculars. In appearance, they're an ideal family that has everything going for them! At least… That's what they believed until the father decided to take them to spend a day at Happyland Park. In this park with its extreme attractions, the most shameful secrets will emerge in the most literally explosive way possible! A horrifying and gory tale of survival begins in this first of two volumes by Shingo Honda! Collecting the complete, 2-volume story, this collected set is being offered at a specially discounted price, perfect for fans of boundary-pushing horror manga!