DVD specials. Episode 1 - (Lecture Shounen): Macaron's special training by Kuu-chan. Episode 2 - (Lecture brothers): Macaron's special training by his brother Daigorou. Episode 3 - ~ ~ (Another ending ~ Natsu Andou's imprisonment):
Watch 30-sai no Hoken Taiiku Specials episode 1 online — subbed and dubbed, with automatic AniList / MyAnimeList progress sync.