Hello! Serenes Forest newb here. I'm currently playing through SoV in Japan and have gotten stuck at the end of chapter 3. I've beaten the bosses on both Alm and Celica's sides, which revealed that Mira-sama (her name in Japanese, not sure about English) is no longer in her castle, but there is nowhere for me to progress on Celica's side. On Alm's side, I've made it to the water gate, but have been told it can't be opened and am, therefore, unable to progress. Is there anyone out there who knows what needs to be done in order for me to unlock the next chapter?