You delivered the Yellow Toy Blocks and Blue Toy Blocks to Roly-Poly 9 for the repair work. Can you believe that toy blocks are used for repairing the tower? Well, considering what Ludibrium looks like...
The tower needs some work, but you need to defeat Block Golems and King Block Golems first. You also need to get 50 Yellow Toy Blocks and 50 Blue Toy Blocks.
#Talk to Roly-Poly 9 in Eos Tower 2nd Floor.
#Obtain 50 Yellow Toy Blocks from Block Golem.
#Obtain 50 Blue Toy Blocks from King Block Golem.
#Talk to Roly-Poly 9 again.