脾臓打ち
Hizō uchi
Strike to spleen

 

Uraken hizo uchi 裏拳脾臓打ち (backfist strike to spleen)

 

Shutō hizō uchi 手刀脾臓打ち (sword hand strike to spleen)

Kyokushinkai

Ōyama Masutatsu, This Is Karate

 

Okazaki Hiroto 岡崎寬人
Sēpai 十八
Kyokushinkai

盧山 初雄, 空手道型教範人巻之 
Royama Hatsuo, Karatedō Kata Kyohan