You need The Invincible to access this town. It's located just north of Ancient Ruins.

1. There is a hidden passageway from the house side leading to the waterfall.
2. Behind the waterfall is a mini-boss who will give you Kiku-Ichimonji after you defeat him.
3. Follow the waterfall to the southeast island; there are 4 items in the 4 corners of the island.
4. Backtrack and enter Falgabard Cave in the north, then follow the map to collect 4 chests inside.

Bestiary Checklist:

• [FFIIIPR-135]135. Silenus
• [FFIIIPR-136]136. Gaap
• [FFIIIPR-149]149. Death Claw
• [FFIIIPR-152]152. Valefor
• [FFIIIPR-153]153. Haniel
• [FFIIIPR-181]181. Shinobi - Boss

Chests/Items:

• I-060: Kiku-Ichimonji - talk to the old man behind the waterfall and win the fight.
• I-061: Hi-Potion - small island in the southeast corner, bottom-right.
• I-062: Demon Shield - small island in the southeast corner, top-right.
• I-063: Hi-Potion - small island in the southeast corner, bottom-left.
• I-064: Demon Shield - small island in the southeast corner, top-left.
• C-256: Thorian Hammer - Falgabard Cave, bottom-left corner.
• C-257: Demon Mail - Falgabard Cave, far-right hidden area.
• C-258: Kotetsu - Falgabard Cave, top-right hidden area, bottom chest.
• C-259: Ashura - Falgabard Cave, top-right hidden area, top chest.

These equipment pieces you acquired are for Dark Knight and Ninja, so you probably want to change your jobs now.