Story Quest: Long Live the Queen
Recommended Level: 49
Blue Grotto location:

There are special enemies here, they are knights. They have a special gimmick which they have only one elemental weakness, any other attack barely give them any a scratch.
IMPORTANT: I suggest you turn off Dimengeon in this dungeon because of these Knights. When they are sent to Dimengeon with different type knights, it'll be really impossible to clear. The easiest way is to turn off Dimengeon and "Escape" from the battles.

- (I-01) Ether L: A few step further from the entrance on your right.
- (I-02) Chaos Clay x2: Just before the split, there is a hidden narrow path leading to another chest.
- (I-03) Chaos Clay: At the split, turn right toward west.
- Follow the main path to the next area (B).
- (I-04) Order Motes x2: After crossing the first bridge, take the top bridge for a chest.
- (I-05) Large Jade: Backtrack and go to the far east platform for another chest.
- Then proceed to the next area (C) for a boss fight.
There is nothing but a boss here, a hard ones.
Preparation
- Note: Kina and Cheryl cannot be swapped during the battle, so I recommend Ez as the last member.
- You should have 2 Blue Quartz in your inventory, equip them on Kina and Cheryl. This will hugely help reduce damage from the knights.
- Unlock Knight Impact Ex for Cheryl, this is the only skill you can deal damage to the first boss.
- Unlock Hyper Grenade v2 then max out Ez Tension skill Infinite Loop +3, so when using Ez's Tension skill, you should be able to command Ez 7 turns in a row (this is very crucial for the second phase).
- Ez should equip "Large Jade" because he doesn't use MP. Having a large amount of HP is important too.
- Unlock "Heal All", "Barrier All", and "Resurrection" skill for Kina, they'll be useful during the battle.
Once ready, save the game and proceed to the altar.
Strategy:
- The boss has only one attack "Charge" which command his knights to attack you (6 knights = 6 times, each attack deal about 1400HP), so you got to watch out because if all of them focus on one member, he/she is dead for sure.
- You should ignore the 6 knights behind and focus on the Unyielding Knight because he'll just summon them back if they were killed.
- Cheryl keep attacking the Unyielding Knight with her "Concentrate" + "Knight Impact Ex", the range of Knight Impact should cover the other 5 knights behind too.
- Kina keep healing the team and use "Barrier All" to further reduce the damage.
- Ez buffs team with "Quick All", "Attack Up All", "Guard Up All".
Repeat until you win.
- This guy has 2 minions (Veteran Knight) each has 10,000HP while himself has 30,000HP. The trick to this battle is that you have to kill them all before they can resurrect each other.
- Ancestral Knight starts with a "Normal Mode", in this mode his team absorb all elemental attacks except physical attacks. When "Mode Change", he and his minions changed to a specific elements and immune to physical attacks. The next turn, he'll use whatever elemental attack he switched to.
- The key battle here is, ignore the 2 minions, Cheryl should focus only using "Concentrate" + normal attack on the Ancestral Knight, Kina as a healer, and Ez as a support.
- When the Ancestral Knight is down to about 15,000HP, Ez uses his Tension "Infinite Loop" so that he can attack 7 times consecutively. Now is a fun time, throwing all your "Hyper Grenade v2" on the boss, each grenade deal a fix amount of 2,700HP times 7 = 18,900HP enough to kill 3 of them before they can resurrect each other.
Reward:
- (I-06) Royal Ring: Immediately equip on Cheryl.
Vibra Palace - Great Hall (Optional)
After watching Cheryl's coronation, you'll appear in front of the royal palace. Head back inside the palace for more treasures.

There are 2 chests which were previously blocked on both side of the hallways on level 2.
- (I-07) SP Capsule: Right hallway.
- (I-08) Chaos Clay: Left hallway.