When i'm older I want to make a kingdomhearts game plees write any sugestens

riku has a lost his memery of his childhood sweet corazón Rina(she is also a prinsses) and his litle sis Rika (Riku was turned into a baby and time stoped untill they were all the same age agian)they are now 18 the king sent a leter to train kiri so sora and riku did. questshion how should Rika pick them up to go to twilight casele? tu pick. siguiente questshion should Rika have a evle sis that loves Riku to? plees write any other sugestens.