Cool chart
However, I have a few things to point out:
- you have Suika as human, but that's probably just a slip-up
- Kosuzu and Rinnosuke have some weird golden colour (which I assume is supposed to be just yellow). Kosuzu is fully human, Rinnosuke is half-human/half-youkai.
- celestials aren't divine to my understanding, they're some sort of ascended hermit, so Tenshi's background should be brown
- Tojiko is a vengeful spirit, so her bg should be brown and pink
- Unzan is also a spirit I believe?
- I'm not sure inhowfar poltergeists qualify as spirits, but this is more of a question than a suggestion
- Hina appears to be some intermediary thing between god and youkai
- Nue doesn't strike me as an animal in her base form, at least not more than Nitori; this is kinda debatable, though
- alien is a pretty awesome category, but I'd probably rename it to Lunarian
- you're probably working on Kasen's relationships right now, but a line between Yukari and Suika is also missing (friends)
- in general, while the chart is awesome and overall organised well, there's still some messy lines here and there going all over the place (especially in the Reimu area and the Myouren temple). a reorganistation is maybe a bit much to ask for, but some shifting around would probably help (the Prismrivers are really in the way)
- some lines, like the one between Utsuho and Kanako, are really easy to misread. maybe get rid of the arrow tip and slide the "benefactor" field towards Kanako? same for Patch/Koa et alii
- lastly, there are quite a few typos. alone in the Eientei box, I see "elixir", "attendant", "feud" and "creator" misspelt, for example (misread the latter as "cheater", which wouldn't be far from the truth, lol)
I'm sorry for all the criticism, I don't mean to bash your chart (for the most part, it's really good) but that's what you get for slandering Patchouli. I really like some of the descriptions (the moon, man). the pink is really ugly though