Hidden Effect:
Occasionally an attack will do 2.5 times more damage than normal.
In Japanese Mythology, Amanomurakumo no tsurugi is the Divine Sword of Susanoo, a Violent God. He obtained this sword by slaying the monster serpent with 8 heads, Yamata no orochi, and later devoted the sword to his sister, Amateratsu.
for anyone curious as to the 6 hit implications of the 437 delay as opposed to a 450 delay GK, the 7 store TP you get after the use of Kaiten brings up the TP return of the weapon to around 11.8, excluding all base Store TP.
Because of this, it shouldn't be too difficult to maintain a 6 hit build with the lower delay.
Ignoring that, you simply need +51 Store TP instead of +46, so anore +5 than normal :).
A very standard Merited SAM build will return a 5 hit to 100% TP build with nothing more than Rajas, Askar body, and Brutal. Provided you have a good set up (at least someone to haste you) you will attain 100% TP once again before the aftermath wears. Overall I'm very disappointed with the Attack Down effect. I wish it was as devistating as the Ghost atk down or the Wivre atk down.
Just curious if there is another hidden effect on this weapon, it seems kinda unfair that Apocalypse grants Haste and DMG multiplier while this is only granting DMG...