Before starting I must give my congratulations to the developer of the mod since he corrected a big bug that he had (the bug with the flip strike was fixed in his last update, ohh yeah)
Currently these are the techniques available for the katana:

-Flip strike: make vertical turns in the air with the katana, a good technique to surprise the opponent
-Pogo sword: while you are in the air attack down with the katana and bounce
-Spin slash: it turns horizontally attacking the enemies that are in front and behind
-Super spin slash: it spins horizontally in a wild way that attacks enemies in front and behind, this attack is so frenzied that it can make you fly
-Parry counter: block an enemy with the katana
-Flurry: attack with an infinite wild combo forward the attack does not stop until the player's energy is depleted (or until the player decides to stop)
-Dash slash: the character crouches and then moves forward cutting everything that gets in his way

The following only appear in the uncommon and rare katanas:

Giant sword - Charge the katana with energy as it grows to deliver a devastating blow
Trail dash: run leaving a trail of elemental energy that damages enemy ñps
Elemental kunai: cast 3 elemental energy kunais, the same ones that explode after 3 seconds

and finally these only come out with rare katanas:

Flying slash - launches a wave of elemental energy forward
Elemental power: theoretically increases your elememetal power ... but ... I'll explain later

Something to note is that common techniques may also appear in uncommon katanas and common and uncommon techniques may appear in rare katanas. It should also be added that unlike other melee weapons, uncommon or rare katanas do not do elemental debuff damage by themselves, that is, a fire sword does not burn or a poison sword does not cause poisoning, the only way to force an attack debuff is using techniques, and here comes the interesting part, only Dash slash, Giant sword and flying sword can do that, the elemental kunai technique does not make elemental debuff, however the explosion caused by said kunai does.

and it is at this point where the problem comes, the elemental power technique, in theory should make your katana cause elemental debuff, but it doesn't, so ... what is it for? Well, just to light and incidentally, it is a weak light but it is maintained for a long time, attention: the giant sword technique already does that, however you are forced to keep the attack button pressed.

Well, up to here I have talked about the techniques of the katanas so before saying goodbye I would like to give some ideas, which are rather dreams for the truth I think they are very difficult to do:

- the shadow clone (similar to the ones that appear in ninja gaiden de nes) such a technique has many uses,

- Remote-controlled shuriken, in case there are similar attacks made by staff and wands but they would look great when doing a technique you can launch 5 horming shurikens against an enemy

Another technique that I would like would be one like the mystical arts of shinobi (from sega), either a tornado, lightning falling from the sky or simply exploding the entire screen, that if said power takes at least 1 day to recharge

Well I say goodbye, I hope this guide is useful for everyone