As of a few moments ago, I was figuring that there's going to be three people that are able to fight in the Prince's party. This party consists of consists of the prince (duh), Ishihara Oharu, and the titular Oracle of Askigaga.
One thought was to retain the abilities both Hiroji and Oharu had from Chance Enouther, with the Oracle more-or-less taking Sakura's abilities. That just doesn't seem right, though. I mean, even if I re-flavor the damage abilities Sakura had to holy-elemental, it just comes off as "bleh" (at best) or "not trying" (at worst).
Another thought that came to mind is to delineate striker/tank/battlefield controller roles to these three, and assign appropriate abilities that way. I figure the Oracle would be the battlefield controller (High INT generally calls for spell-slinging.), with Oharu tanking it up (She's a mountain of HP with high DEF and WILL.), leaving Hiroji with being some kind of INT-based striker (He's pretty fast, but his STR isn't that great.). I suppose I could have Hiroji retain his debuff skills from Chance Encounter with this set-up?
Whichever route I go (unless I come up with something else in the interim), I don't see Oharu getting any healing skills. The way she "heals" is to take damage for everybody else, if that makes any sense. Hiroji? I dunno. Seems iffy at best. Definitely the Oracle, though.
Oh yeah. I guess I have the other perspective too. I mean, that perspective will only have the one character in the party (probably), so, there's going to be a lot of weirdness going on with it to begin with. Assuming I actually go that route. I think players having that insight might help, in some ways, but, in other ways, that side of the story would be the most difficult part to write.