Short Answer

First Prince of Flowing Sands is a large Chapter 2 cave boss whose most important route value is the breakable wall near the arena. Let his charge or heavy body attack crack the wall before finishing the fight if you want Loong Scales for Red Loong and later hidden Loong bosses. If he is already dead, use Wandering Wight’s Spirit Skill on the wall instead. In combat, dodge the slow body pressure, attack between commitments, and use Cloud Step if the cave walls trap you.

When This Guide Helps

Use this guide if you killed the boss too quickly and missed the wall, or if the cave feels too cramped to heal safely. The First Prince is not especially fast, but his size and the narrow arena can turn one bad dodge into a corner trap.

This fight matters beyond the boss clear because the broken wall leads to one of the key secret-boss unlock items.

Route And Unlock Context

First Prince appears near Valley of Despair after the King and Second Prince sequence. If you have Pungent Flesh Chunk, you can use it at the cliff near the shrine to summon him. If the King escaped the duo fight, the King can summon him in the nearby cave instead.

Before killing First Prince, use his attacks to break the large wall in the cave. If you miss that chance, return with Wandering Wight’s Spirit Skill and use it to break the wall yourself. After the opening is clear, go through to find Loong Scales, which unlock Red Loong’s waterfall route and later Loong encounters.

Core Mechanics

First Prince uses slow but powerful body attacks. The best punish windows are after charges, slams, and committed swipes. Because the cave is tight, distance management matters more than it first appears. A safe dodge into open space is better than a perfect punish that leaves you against a wall.

The wall break is a route mechanic, not just environmental flavor. If the wall is still intact, adjust positioning until the boss hits it.

Moves To Respect

Respect the charge. Stand so the boss can hit the breakable wall, but dodge away before the impact catches you.

Respect fast swipes after slow movement. His body language can look sluggish, then clip you with a quicker hand swipe if you overstay.

Respect the cave corners. If your back is on a wall, your next dodge may not create space. Use Cloud Step or reset toward the center.

Fight Plan

  1. Decide whether you are using Pungent Flesh Chunk or the King-summon route.
  2. In the cave, position near the breakable wall and bait a charge or heavy body attack.
  3. Confirm the wall is cracked before pushing for the kill.
  4. Punish only after slams and body attacks finish.
  5. After the fight, collect Loong Scales before leaving the area.

Cloud Step is useful if you earned it from Black Wind King, because it can save a cornered attempt. Immobilize is good after a slam recovery but should not be used before the wall break if it stops the boss from hitting the wall.

Use a steady defensive setup. You need control and route awareness more than maximum burst.

Common Mistakes

  • Killing First Prince before breaking the wall.
  • Fighting with your back against the cave edge.
  • Dodging too early into the charge and still getting clipped.
  • Forgetting to pick up Loong Scales after opening the crevice.

Quality Check Before You Move On

You are ready to move on when the wall is broken, Loong Scales are collected, and the boss is dead. If only the boss is dead, come back with Wandering Wight’s Spirit Skill before treating the route value as complete.

FAQ

How do I summon First Prince of Flowing Sands?

Use Pungent Flesh Chunk near the Valley of Despair cliff if you earned it, or follow the route where the escaped King summons him in the cave.

Why should I break the wall?

The wall leads to Loong Scales, which unlock Red Loong in Chapter 1 and later hidden Loong fights.

What does First Prince reward?

He rewards key route value through the wall break and also drops items such as Arhat Gold Piece and armor material.

Sources