All training is via appointment only due to the serious nature of Sekiguchiryu Battou-Jutsu

Ken - Jutsu 剣術 

"Sword techniques" and "is used as a universal term generally for sword training". 

Battou - Jutsu 抜刀術

"The craft of drawing out the sword" and "killing one's enemy simultaneously"

Battou-Jutsu is a specialization component of Ken-Jutsu.

Battou-Jutsu is often used interchangeably with the terms Iai and Battou

It's an older Japanese word for Iai-jutsu.

Battou-Jutsu is a field of Kenjutsu which deals specifically with the rapid drawing and sheathing of a Japanese katana sword. 

In most cases, a Katana Sword, being drawn from its sheath moves with a much greater speed and force; than when it is being wielded normally. Additionally, greater drawing speed gives a swordsman an significant advantage in combat over an opponent whose speed is inferior with a sword already drawn in hand. 

This is due in part to the fact that a katana's sharp blade curves upward against the inside of the sheath, allowing the swordsman to use more strength in drawing it without having to worry about applying extra fine motor skills to control his movements - the sword's path is guided by the sheath while the blade meets no resistance, moving two to three times faster than normal. Generally, Battou-Jutsu is practice as a highly specialised part of a classical Koryu Bujutsu and is closely integrated with the tradition of Swordsmanship / Kenjutsu. 

A Battoujutsu Swordsman will practice with the live-blade katana (Shinken), often they simply drill (Kata) alone in Nature. This can in turn produce's instinctive behaviour's (muscle memory) to an elevated level of skill, thus unifying the swordsman mind body and spirit to the sword, through arduous repetitive conditioning over many years. 

The training is designed exclusively for combative effectiveness, through factors such as distancing, timing, targeting. Battou-Jutsu differs significantly from modern sport systems of Kendo or Iaido, in a number of ways due to its extensive history & specialised combative culture within the traditional Ryu-ha passed down throughout the 17 Generations of Shihan-ship from Sengoku Jidai / Ancient Warring States period to this present day.   

 Battou-Jutsu is primarily focused on cutting application for combat effectiveness, the sword usually begins in the scabbard, cutting usually takes place the extraction of the sword the moment it clears the Saya/scabbard; where with other forms of sword arts such as Kendo / Iaido the sword is already fully drawn out before cutting action begins. 

The Battou-Jutsu swordsmen will often practice with a "Real Shinken Sword" (live blade)to improve their cutting ability, against soaked straw bamboo & gyoza mats used for (Tameshigiri)

test cutting to demostrate skill and level of proficiency.