This sword needs a slight increase in base damage. It's current one is a bit low considering it's level and STR requirement.
Swords of much lower level and STR requirement that have the same attack speed as this sword have a better ratio of base damage to STR requirement than it does.
Kyuketsuki = 42 base damage, 120 STR requirement, level 54, rare = 0.35 base damage per STR requirement
Iron Scythe = 28 base damage, 75 STR requirement, level 42, rare = 0.373 base damage per STR requirement
Religious Katana = 26 base damage, 70 STR requirement, level 40, legendary = 0.371 base damage per STR requirement
(All of the swords have the same attack speed which is 1 second per melee.)
It just feels weird that swords that hybrids use somehow have better ratio of base damage to STR invested than a sword meant for pure WM users. My suggestion is to buff the base damage of Kyuketsuki to at least 45 (+3 base damage), that way it will have 0.375 base damage per STR invested which seems more in line with previous swords.