est. Rough estimate based on volume count, reprints and magazine — not an official figure
Overview
Welcome to Happyland, an extreme amusement park! The Komiya family is not unusual is any way, two parents 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! (Source: Ablaze Publishing)
Source: AniList
External databases: MADB · AniList
How to compare editions, collected volumes and ISBNs / Sources, updates and corrections
Volumes
Nichibun comics First edition
2vols · 2021-07
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