Spelunker Sensei
English title: Spelunker Is a Teacher
Japanese title: スペランカー先生
Type: OVA
Source: 4-koma manga
Episodes: 1
Status: Finished Airing
Aired: Mar 16, 2011
Duration: 30 min
Rating: G - All Ages
Studios: Studio PuYUKAI
Producers: Indeprox
Genres: Comedy

There's a new teacher in town—Spelunker! This unusual man is anything but a typical instructor, giving speeches about traffic safety to the students, reacting strangely to a humidifier, and enjoying lunch— albeit with ample condiment mishaps. With such a bizarre new role model to learn from, Spelunker's students will never be the same!

(Source: Anime-Planet)