[tribute]_gakkou_no_kaidan_ova_[dvd_720x480_h265_10bit] (a8927)

https://anidb.net/anime/8927

Main episodes:

• Audio: Japanese
• Subtitles: none
• Source: Japanese DVD

"Toilet no Hanako-san Opening" special:

• Audio: Japanese
• Subtitles: Japanese
• Source: Japanese DVD (compilation vol.1; Japanese subtitles, OCR'd), Japanese DVD (2009 #1; 16:9 video)

Source for episodes 1 to 8 are the compilation DVDs released in 2009, as some of the episodes were only released on VHS previously. This version adds an opening animation.

Source for episodes 9 and 10 are the separate DVDs that contained only one episode each (which were released after the compilation DVDs).

The opening special for the fictional anime "Toilet no Hanako-san" was included on the compilation DVDs with the 16:9 video letter-boxed to 4:3 and Japanese hardsubs below the video, those subtitles were OCR'd and combined with the full-screen 16:9 video from the first 2009 DVD that did not have any subtitles.