As the guy below me said, this is indeed written by the same Shimimaru the Eromangaka. Heck, as long as you have an account, his other works might be available here 😉.
I feel as they are leaning towards otoko no ko instead of just being a trap. They said it themselves "I'm just wearing what I wear for the heck of it".
So in the end a henshin device is a henshin device. Still, I would pretty much want to know how the belt does its thing with money to transform the user.