Behind the East River Gate is a sidequest in The Last Story. It can only be played starting at Chapter 6.
Story[]
Zael converses with a young man in the area west of the Market, and he speaks of his curiosity surrounding what could be behind the gate. Zael gains the ability to enter that area, but first he needs to gain the ability to dive which is done acquired in the quest: Friend of the Frogs. When he enters through here, he fights 3 Cave Cougars. Depending on the playthrough, he will face different-level enemies: in the regular playthough they are Level 40, and in NG+ they are Level 80.
Reward[]
- Zael is rewarded with Silver Thread, Indigo Thread, and a Guardian Blade.