I'm sure this was originally released on a site called privix so if you wanna reach out to Tanaka sensei they should be there. Or maybe on twitter. Though they have a bunch of different series and this one was just made because they were obsessed with Yarichins at the time so it's basically a hobby.. they also mentioned they wanted to get this an anime ASAP and they did so I won't be surprised if they drop it.
The mother of all badasses