Rising torrent

From LSWiki

    Perform Rising Torrent

    General-Use Combat Maneuver
    Usage: perform rising torrent [at <target>]
    Requirement to Use: have at least 100 points among 100% of martial arts skill, 75% of unarmed
        combat skill, 50% of jumping skill, and 50% of killer instinct skill and be familiar with
        rising torrent
    Typical Activity Cost: 24

    Propelling yourself upward, you will focus your momentum into one solid impact from your fist.

Learned by first meeting the requirement to use, and then asking to be taught by Musashi as an Aisenshi or by Rindol after completing his relevant task.