Star Ocean til the end of time - Sofia's End Game Weapons + How to get endless synthesis materials. 

thanks bro.... i'm replaying this game after a decade xD this really helps....

Santa Boots. All i ever needed... were Santa Boots... I trained Steal and grabbed synth mats from superbosses like a tryhard. Oof. Definitely have to give this game another go now.

By games end I didn't even use her Sofia can NOT get 5000+ defense making her NOT worth using even at lv 255 against Etheral Queen Lenneth or Freya at all Cliff Fayte Nell Maria and Mirage however CAN.