I would like to bring attention to the current state of the Blood Fan compared to the Crystal Fan. While the Blood Fan is positioned as an endgame weapon alongside the Sukarabe and Nitoryu, its performance doesn't reflect its difficulty of obtainment.
-Obtainment: The Blood Fan costs 250k Ryo and requires defeating one of the final bosses in the Land of Iron. The Crystal Fan costs only 5k Ryo.
-Damage & Speed: The Blood Fan offers only +3 damage more than the Crystal Fan and a slightly higher attack speed, which is a negligible upgrade for the price gap. (0.3 snare vs 0.5)
-Stat Bonuses: This is the biggest issue. The Crystal Fan provides +3 Agility and +3 Fortitude (+6 stats total). The Blood Fan only provides +2 Fortitude, making it a worse "stat stick" despite being endgame.
-Lifesteal: The lifesteal effect (healing ~7 HP per hit with 80 STR) is currently too low to be impactful.
Both weapons require 80 Strength, but the reward for obtaining the Blood Fan is disproportionate to the effort and cost. It currently feels underwhelming compared to other endgame alternatives. I suggest at least looking into it.
(Not a bad weapon, i just think could be more viable)