If Kronii did a mascot stream, she's got plenty of options where she could give Boros a voice and do a debut like Bae
https://www.youtube.com/watch?v=NBscfZz7FkgOr just have Boros remain silent and do various stuff like DJ, or play a game with another mascot like Selen.
https://www.youtube.com/watch?v=MT2m0NEoViMI think Kronii could do something like having Boros join the new minecraft server and he then builds his own room in the new bunkeronii, or explores one of the cave systems in it.
Boros then leaves what he found for Kronii with a note
But it's totally illegible because Boros doesn't know how to write. 