EARTH DEFENSE FORCE 6 - Fencer Weapons: 'OneeChanbara ORIGIN' illustrated 'Disguised Body Pillow'.

A hammer disguised as a body pillow with the same specs as the Vibro Hammer.
Fencers' equipment looked terrifying, and many citizens around the base voiced their concerns.
As a result, a less intimidating version was developed.

A hammer that is installed with an ultra-vibration generator (Vibro Drive). It generates strong vibrations that affect an entire area as opposed to a single target.
The vibrations are transmitted through objects, not air, so they have no effect on aerial enemies. As an added bonus, during the swing a wall of air is formed in the area of the massive vibration which reduces the damage taken when attacked.
Press and hold the attack button to increase the Vibro Drive output, and when it's reached its max, release to unleash a powerful slashing maximum voltage attack.