To be fair, in dandadan they use yokais to deal with yokais, yokais to deal with aliens, aliens to deal with yokai and aliens to deal with aliens. And both of them to deal with UMAs. And sometimes psychic powers to deal with a bit of everything. It's an awesome mess xD
I also thought that it was an opioid. I mean, morphine is an opioid, that's why it's so restricted.
But another world could have something similar even if it's named differently
Ohhhh, I knew she reminded me of someone, but couldn't pinpoint it until when she grinned like that at the end, Suwa looks a LOT like the female lead of dead-tube xd
Thx for the chapter!