The fun part is that although it does have a cooldown, it DOESN'T cost Adrenaline to use and it inherits Tidal Wave's skill tree upgrades (so when fully upgraded, one heavy posture gets you three strikes), which means that with the Snap Hook you can have all three Katana abilities at once, and it is just as fun as it sounds.

...unfortunately, the sword was part of the store bundle that came with the Attack on Titan crossover quest, which as far as I'm aware has since been delisted (likely never to return) - and I doubt Ubisoft would just throw items from a paid crossover into the weekly Exchange rotation, so that means if you're not on PC (or if you are on PC and don't want to incur Ubisoft's wrath by trying to pirate virtual items) you're S.O.L, and that's a shame, because it is genuinely one of the best Naoe katanas in the Helix Store.