That video was actually a promo for a video game that predates Nanoha.
The Triangle Heart series had three games, with an additional three spinoff/sidestory games. The third spinoff game was also titled Mahou Shoujo Lyrical Nanoha, and ended up getting itself spun off into the set of anime series that we all know and love.
This video was included on the Triangle Heart ~Sweet Songs Forever~ Soundstage VA DVD, which was itself a promo for the then-upcoming TH~SSF~ OVA series.
It's a fun look at the origins of a series.------------
Honou Productions
------------
Honou Productions.
The Triangle Heart series had three games, with an additional three spinoff/sidestory games. The third spinoff game was also titled Mahou Shoujo Lyrical Nanoha, and ended up getting itself spun off into the set of anime series that we all know and love.
This video was included on the Triangle Heart ~Sweet Songs Forever~ Soundstage VA DVD, which was itself a promo for the then-upcoming TH~SSF~ OVA series.
It's a fun look at the origins of a series.------------
Honou Productions
------------
Honou Productions.