The Tsunami Kick, called Heel Drop/Axe Kick (踵落とし Kakato Otoshi) in Japan, is one of many Mishima Style Fighting Karate moves spanning the Tekken series. This move made its debut in the first game of the series. Starting with the arcade version of Tekken, Heihachi could combo a Tsunami Kick at the end of a Spinning Demon (Hell Sweep). As a general rule, the input for Mishima characters is WS+4,4 (although Kazuya and Devil Jin also have a simpler command that is d/f+4,4.