Good luck with your project, buddy:) Even though i love Juuichi and this fanmade sequel makes him as a main love interest, Torahiko x Hiroyuki is still OTP, a canon pairing from the original game and will always be) Btw, i'm happy you're using the original sprites, that's a right choice ^^
P.S. We don't know which city Hiroyuki moved to. In the original, it was just an unknown city, "Osaka" is an addition by revisited/homecoming team and isn't an original source. Anyway, good luck once again:3