After a tragic incident with his pet, Utsuto Yasushi develops a hatred towards people and becomes a shut-in, separating himself from others as much as he can. This nature proves to be the end for him during a late-night walk, when he tries to save a drowning dog but ends up in trouble instead, only to refuse the help of a rescuer at the time. However, it's not the end for Yasushi, as he's somehow transported to the world of a then-famous monster-hunting MMO, Omushi. The only problem: he hates the idea of hurting animals and has been actively avoiding the game until now! Armed with nothing but a scrawny body and a well-functioning pair of eyes, can Yasushi survive in this new world filled with creatures out to get him?