蓝色电须s are materials in 异度神剑X. They can be obtained from Blue 电鲨 such as 「温和」电鲨 located in 原初荒野's 独角岩 and 寂静沼泽, or 「致命」电鲨 in 忘却溪谷's 南海岸 and 浮游岩礁. This item can be dropped by successfully destroying one of two tentacle appendages of the Duoguill's head. It is possible to purchase the material for Reward Tickets at the Network 中央控制台 in the BLADE HOME. One is needed during BLADE司令的一天.
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