what i said to the last guy asking for specific videos still stands. For anything from @oz after like early 2024, if you don't see it in this thread, southwind, or hanime1, no one has shared it and you will have to buy it if you want it cause no group is making enough money to pay 25 a month for @oz content since that's equivalent to all the content for 5 other artists.
A couple years ago I was trying to collect all the game versions myself (posted about it on page 5 of this thread lol), and I do have cg_ro_01 from back then. I'll upload it, in case you still need it.
At the time, all links for cg_th_01 were broken and cg_hc_01 didn't seem to exist on the internet. They were two of the three games that I was ultimately never able to find (the other was cg_cp_01, that you do have). I could try looking for them again, but honestly I doub't I'd have any more luck than you did.
I ended up kind of losing interest after a few months so I haven't followed their releases since then, which means I won't be able to help with anything else unfortunately.