The Niten Ichi Ryū ("One School of Two Heavens"), the most famous samurai school in Kyoto, was founded by Masamoto Takeshi, known as the greatest swordsman, as he had never lost a duel in his whole life, and was the creator and master of the Two Heavens sword style. The school is located in the city of Kyoto. It is based off of the Niten Ichi-ryū founded by Miyamoto Musashi.
The history of the Niten Ichi Ryū is mostly unknown, however it has groomed some of the best samurai. It also holds a ritual known as the Circle of Three to determine who is allowed to learn the Two Heavens unique to the school. The school is a longtime rival of the Yagyu Ryū.
These are the known sensei of the Niten Ichi Ryū: