Well, Byleth's birthday is one day away from being referenced to a Earth, Wind and Fire song. And the trio are dressed as Cerberus from Helltaker.
If Byleth doesn't keep an eye on his cake it will probably go missing.
Also shame how he got immediately booted to being less popular than his female counter part not long after Three Houses released
So the odds are against Male Byleth when people find out about that...
True. I think it either has to do with that possibility that Female Byleth might look like how Sothis would look, or the face that she is a attractive young woman that runs around the battle field with a lot of skin showing. XD