Toaru Kagaku no Railgun S: Daiji na Koto wa Zenbu Sentou ni Osowatta
English title: A Certain Scientific Railgun S: All the Important Things I Learned in a Bathhouse
Japanese title: 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
Type: OVA
Episodes: 1
Source: Manga
Genres: Comedy
Studios: J.C.Staff
Duration: 6 min
Rating: PG-13 - Teens 13 or older

Bundled with the official visual book.