Official servers are notorious for "限时礼包" (limited-time packs) that cost hundreds of dollars. Extra Quality servers operate on a donation model (usually via Patreon or Ko-fi) that gives cosmetic rewards rather than power. Jade (premium currency) is often farmable at 5x the official rate, allowing free-to-play players to compete with whales.
Creating an "Extra Quality" Onmyoji server presents significant technical hurdles. onmyoji private server extra quality
For a stable experience with the latest content, players are encouraged to use the official test servers 8th Anniversary Version onmyoji private server extra quality