ウォーターストリーム交換券
ウォーターストリーム交換券, GMS v271
This coupon grants the Gigarifle Hydroblaster Skill.
Can be used after acquiring Rifle Hydroblaster. Upon using Gigarifle Hydroblaster Coupon after acquiring the Linked Skill 'Rifle Hydroblaster,' 'Rifle Hydroblaster' will be replaced.