Oishi Susumu Tanetsugu (大石進種次, 1798–1863) was a Japanese kenjutsu practitioner.
As Oishi was a formidable fighter, many teachers paid him off in order to avoid the embarrassment of a public defeat.
Oishi himself eventually suffered a swift and humiliating defeat at the hands of Otani Nobutomo, a swordsman of the Jikishinkage-ryū.
[2] He specialised in powerful thrusting techniques, which were made more effective by the length of his weapon.
[4][5] He also made use of customised bōgu (kendo armour), adding complex deflective crests and flaps to confound an opponent's attacks.