Niten Ichi Ryu also known as Nito Ryu (Japanese to English trans: the school of two swords) was a form of Kenjutsu (Japanese swordsmanship) created by the legendary sword-saint Musashi Miyamoto (birth name : Takezo Shinmen.)
The style is mostly noted for it's use of using two swords in harmony as one...one to parry, and the other to kill (ex.)
From what I understand of the style's history, Musashi was highly trained by his father in Juttejutsu (skill w/ a steel truncheon) in both standard Jutte, and the Manji-jutte (cross shaped truncheon.)
The jutte is a defensive/offensive tool that switches between the two at a blink....the precursor to the modern Sai used to Okinawan kobudo....
A lateral parry w/ a Shoto (short sword) with a counter cut using the Daito (long sword) is a classic example of Nito Ryu (aka Niten Ichi Ryu.)
Semi-popular pairing belonging to the Naruto fandom involving the Characters Hyuuga Neji and Tenten.
Gently but consistently hinted at throughout the series, the pairing has been backed up by hints such as the following few:
The two of them usually shown training and hanging around together; Tenten's admiration and worry for Neji; That Neji, usually quite chauvanistic, respects her; Neji saving Tenten from drowning/holding her up.
Although the pairing seems to be chastised by fans of other pairings involving either Neji or Tenten (eg - TenLee, NejiSaku, NejiHina) it is one watched closely as one of the top 5 non-yaoi Naruto pairings.