Just one thing I wish to add.
People gave you here 2 links from 2 diferent branches of Ogasawara ryû.
Both are oficial, but one is the honke (main house): the one with the sangaibishi kamon full in purple, and the other is a bunke (secondary house) the one with ths jumonji inside the sangaibishi kamon.
The historical fact is the following: Ogasawara ryû was created in early Kamakura jidai as an archery school. As the Minamoto, and Hôjô shogunate consolidate, they introduce little by little more ettiquete inside the teachings of the school.
Arround Muromachi jidai, I think in the Kitayama bunka era of shôgun Ashikaga Yoshimitsu, the school was so full of geijutsu arts and reihô that almost left the archery and horsmanship teachings. Then was created a branch of the school that focus on that "military" part.
The main school continues today just teaching traditional reihô, geijutsu arts, and modern protocol by the hand of the 33th sôke Ogasawara Keishôsai.
The other branch main teach is Kyûjutsu-kyûbajutsu-yabusame, but also teach reihô, as you post in your video. You can found it also in the Nihon Kobudô Kyôkai homepage.