Toaru Kagaku no Railgun S: Daiji na Koto wa Zenbu Sentou ni Osowatta

Toaru Kagaku no Railgun S: Daiji na Koto wa Zenbu Sentou ni Osowatta, A Certain Scientific Railgun S: All the Important Things I Learned in a Bathhouse, とある科学の超電磁砲S 大事なことはぜんぶ銭湯に教わった