I truly hate this area and usually spend at least half an hour getting all the treasures here. So, I decided to use a guide this time and it turns out it's not that complicated after all.
I forgot to get the two chests in the area with all the green guys, but I'll get them next time.
GarlandTheGreat presently has 943,531 views for Chrono Trigger across 102 videos, with his channel currently having around 16 hours worth of content for Chrono Trigger. This is 5.35% of the total watchable video on GarlandTheGreat's YouTube channel.