Strength-sucker

The Strength-sucker (ブスチラシ) is a creature featured in Made in Abyss: Binary Star Falling into Darkness.

Description
The Strength-sucker looks similar to the Pupa-carrier, but is a different species. It loves the smell of excrement, and will gather to that scent anywhere in the Abyss.

This creature can force a target to expend an abnormal amount of energy by swarming around it and as such must be dealt with quickly before one loses consciousness.