>>22410388I'm very much guessing 3D. They clearly have some way to do it since that's what they did for EN/ID for Holofes so why not just utilize that further. ID1 hit its two year anniversary this week and it's sorely overdue. Reminder that is second year, yes they're almost half a year older than EN branch.
The IDs were the first hints at English speaking Holos pre-EN, that is how/why Risu was a big deal here on /jp/ because she could actually-speak-English. Back when they were new, Moona and Iofi didn't speak it nearly as much, but Moona's English improved a lot and she is easily able to hang with ENs now if she wants.