Resonators Monsters Weapons Items
Lento Helix Development Materials A basic material used for Weapon Ascension and Skill Upgrade for Rectifier Resonators.

A helix with soothing waveforms. Facing this remarkable substance, human beings finally realize what static vibration is about.
Sources
Forgery Challenge: Abyss of Initiation
Synthesis - Conversion
Forgery Challenge: Misty Forest
Souvenir Store
Weapon Shop