PR
ゾンビに囲まれて学校で二人きりアンソロジー = ZOMBIE NI KAKOMARETE GAKKOU DE FUTARIKIRI ANTHOLOGY COMIC
ぞんび に かこまれて がっこう で ふたりきり あんそろじー
est. Rough estimate based on volume count, reprints and magazine — not an official figure
How to compare editions, collected volumes and ISBNs / Sources, updates and corrections