Heiwa na Gakkou

1–3. Shikashi Nanimo Okoranakatta (しかしなにもおこらなかった); Zero-Sum Ward 2014 Nos. 38–40
4–7. Eiyuu no Oya (英雄の親); Zero-Sum Ward 2014 No. 41 – 2015 No. 44
8. Heiwa na Gakkou (平和な学校, Peaceful School); Comic Zero-Sum 2016-07

Note: The chapter count includes one untitled extra.