they made a chart just in case people were confused about what the fuck is happening between everyone and all the corporations, this is adorable.
I don't know what's written in the little boxes in the connecting red arrows but I do know all the names of everyone involved (mostly, never gonna remember that kid's name that always has a Haro) and the corporations part of the Group.
i'm a sucker for a good diagram, so i hacked together an english version over my lunch break (with the disclaimer that this is mostly based off of google translate)
also if you wanna get really unhinged, there's a great diagram of how the company politics stand as of episode 19-ish here: https://twitter.com/bloomfilters/status/1662865296573583360/photo/1