"Torture Tower Doesn't Sleep: Extra Chapter"

『(『)拷(ごう)問(もん)塔(とう)は(は)眠(ねむ)らない(らない)』(』)番(ばん)外(がい)編(へん)'goumontou wa nemuranai' bangai-hen

"Torture Tower Doesn't Sleep: Extra Chapter" is a bonus story written by mothy taking place thirty years before Torture Tower Doesn't Sleep ―The Three Daughters of Sir Torture― released through the official blog for the series. Part 1 was published on December 11, 2013; part 2 was published December 18, 2013; and part 3 was published on December 25, 2013.