Short Answer
Red Boy is the first half of the Chapter 5 finale at Field of Fire, Fallen Furnace Crater. After Red Boy falls, a cutscene turns the fight into Yaksha King. Save enough healing, mana, and Focus for that second form: roll off burn in phase one, then respect Yaksha King’s sweeping attacks, back-spike tell, and wall dive.
Route And Unlock Context
From the Fallen Furnace Crater shrine, travel forward into the open arena to trigger the finale cutscene. This is required progression and serves as Chapter 5’s final boss sequence.
The encounter is one continuous story sequence with two identities. Red Boy comes first. After you defeat him, the transformation cutscene plays and Yaksha King begins. Do not spend everything on Red Boy unless you can end that phase cleanly.
Fight Plan
Against Red Boy, stay calm during aerial attacks. When he rises and sends clones downward, focus on dodging the clone dives and the final dive rather than trying to hit him in the air. When he whirls his weapon and chants, leave the immediate range unless you are confident in the dodge timing.
Burn is a real resource drain in this phase. If the status lands, roll to clear it before drinking unless you have a guaranteed heal window. Watch for the sideways step that leads into two dash attacks; Rock Solid can answer it if your timing is steady, but a clean dodge is safer while learning.
Yaksha King is less evasive, but the hits are broader. Use heavy attacks to interrupt when you have a real opening, then back out for sweeping strings. When spikes appear from his back, leave the area before the ground erupts. If he runs onto the wall, create distance immediately because the landing covers a large space with spikes.
Moves To Respect
- Red Boy aerial clones: dodge the clones and final dive; do not waste spells while he is unreachable.
- Whirling weapon chant: retreat or time one confident dodge, then punish after the release.
- Red Boy double dash: the sideways step is the warning.
- Yaksha sweeping attacks: wait for the full sweep sequence before countering.
- Back spikes: move away before the ground spikes rise.
- Wall dive: run out from the landing area, then re-enter only after the spikes finish.
Recommended Setup
Bring Fireproof Mantle or burn-control tools if Red Boy’s scorch pressure is draining your gourd. Keep Immobilize for grounded moments, not aerial clone sequences. A quick stagger Spirit is safer than a long animation because Yaksha King’s sweeps can punish greedy casts.
Save one major resource for Yaksha King. A transformation, full Focus heavy, or clean Immobilize window in the second form is often worth more than a faster Red Boy phase.
Common Mistakes
- Emptying mana and Focus into Red Boy before Yaksha King appears.
- Healing while burn is still ticking and Red Boy is mid-combo.
- Punishing Yaksha King after one sweep when a follow-up is still coming.
- Staying close after the back spikes appear.
- Running under the wall dive instead of away from the landing area.
Quality Check Before You Move On
You are ready to leave Chapter 5 when Yaksha King is defeated, the finale rewards are collected, and your Chapter 6 route is unlocked. If Bishui Cave remains unfinished, consider returning before pushing deep into the next chapter.
FAQ
Is Yaksha King a separate fight from Red Boy?
It is the second form of the same finale sequence. Red Boy falls, a cutscene plays, and Yaksha King begins.
How do I deal with Red Boy’s burn?
Roll to clear burn buildup and heal after a committed attack, not while he is still dashing or airborne.
What is Yaksha King’s biggest warning tell?
Back spikes mean the ground eruption is coming. Leave the area immediately and punish after the attack ends.
Related Next Steps
- Chapter 5 route
- Keeper of Flaming Mountains and Yin-Yang Fish boss guide
- Bishui Golden-Eyed Beast boss guide
Sources
- How to Beat Red Boy the Yaksha King and Location guide
Fallen Furnace Crater route, Red Boy-to-Yaksha King transition, burn handling, spike tells, wall dive, and rewards.