Is That Time I Got Reincarnated as a Slime episode 18 filler?
Canon No, episode 18 of That Time I Got Reincarnated as a Slime is canon.
#18
Evil Creeps Closer
忍び寄る悪意
Aired 5 Feb 2019
Canon No, episode 18 of That Time I Got Reincarnated as a Slime is canon.
#18
Evil Creeps Closer
忍び寄る悪意
Aired 5 Feb 2019