Senpukyaku

The Senpukyaku (旋風脚, Senpuukyaku, lit. "Whirlwind Leg") is a unique attack used by Ryu and Akuma. It only appears in the Street Fighter Alpha and Marvel vs. Capcom series.

Description
Executed by moving right and pressing medium kick, the user leaps forward in an arc with an outward spin kick aimed at the opponent's head, in a similar motion to a Tatsumaki.

In its appearance as one of Akuma's unique attacks in Marvel vs. Capcom 3, Akuma flies more straight in the air as opposed to in an arc.

Tactics
The leap allows the move to go over most low attacks.