Chiryokumaru
Genres: Action
Type: ONA, Episodes: 1
Aired: Nov 1, 2016
Studio: Studio 4°C
Source: Original
Rating: PG-13 - Teens 13 or older
Synopsis:
Inside a majestic museum, a young warrior gets attacked by shadow beasts born from people's fear and uncertainty over what they don't know. The warrior fights against them using the energy charger on his waist, but soon the energy runs out. In this desperate situation, he finds a new, unexpected source of power.

(Source: YouTube)