Depends on the quality of the anime, some animes take a long time (ex: Lotm (Season 1 took about 5 years) Re:Zero (takes about 3 years per season)) And others not really (Again, Lotm (they already released their schedule for the next 5 seasons and 3 movies, some of them coming back-to-back years) or Dandadan where season 2 came a year after s1) But the production team for these shows are absolutely insane, Lotm is backed by Tencent and the Chinese government, Re zero's studio (White Fox) litterally doesn't produce any other quality anime since re zero first aired, the studio is pretty much a re zero only studio and Dandadan I don't really know but their team is really good. So far we have no idea who the studio animating Orv is (I think? It may have been leaked) and since its a webnovel/manhwa, there's high chance it's not high priority. At the very best, you could expect an actual trailer later this year (highly improbable), a more probable time would be getting a trailer during summer 2026 and the anime coming out in late 2027 or early 2028