Yakudatazu Skill ni Jinsei o Sosogikomi 25-nen, Imasara Saikyou no Boukentan Midori Kashi no Akira - Vol. 6 Ch. 29.1 - A New Threat

[MangaDex]

 

[rexmundi]

Mutated hippo

 

[StLOrca]

Like they aren’t already two-ton murder machines.

 

[Madologist]

These aren't mutated hippos or special magic monsters.
These are just your regular hippos.