there is a way to play it on the go, that being on joiplay
but that's a mobile thing, not ds/3ds, and most phones over 2 weeks old will kinda struggle with the rebornverse games
in theory, i think it would be possible to entirely recreate reborn for the 3ds (give or take online play), but you'd be 3 years, a little over a year, and a little under 2 months late for that
yes, that's 3 different time periods some core 3ds thing was discontinued, i'm just waiting for them to recall every 3ds at this point