Slayer Tycoon How to Reach Infinity Castle
Biwa Woman, the 10 R$ pass, and what to do once Muzan is in front of you.
Infinity Castle is not a raid playlist. It is a room with Muzan so you can spend a Strong Soul. Players search “how to get to Infinity Castle Slayer Tycoon” after they see a YouTube teleport and then walk the whole map twice. This page is the actual door.
You do not need the castle to finish a first kit. Buy Insect or Rooting Gun first. Come here when you own the Awaken pass and a soul from a boss.
The door: Biwa Woman
She sits by the train tracks in the middle of the map. English sources also call her the station Biwa Demon. Talk, do not attack — punching the vendor is not how you start the Biwa boss fight.
You can use the teleport if you have either:
- Easy Teleport Infinity Castle gamepass at 10 R$, or
- Biwa Art bought from the Art Sensei (about $38,000 plus reagents).
Ten Robux is cheaper than farming Biwa Art unless you already wanted Nakime’s kit. Pass list: gamepasses.
Older notes about a 250 R$ “talk to Muzan” fee look like they collided with the current Awaken pass. Pay Awaken (250 R$) plus the 10 R$ teleport if you need both. Do not pay a rumor twice.
Inside
Demon King Muzan is the counter for Blood Demon Art awakens: Shockwave → Destructive, Moon → Chaos, Biwa → Master. Full ritual: awakening.
Bring:
- The base art already bought this session.
- A Strong Soul.
- Cash buffer. Sources say “some money.”
- The Awaken pass on the account.
If you are a Slayer chasing Water Flow, you want The Master at Slayer HQ, not this castle. HQ is the v2.0 interior. Castle is the demon conversation. Walking into the wrong building with your only soul is a common brick.
Night Muzan
v2.0 also lets Muzan spawn on the overworld at night. That is a convenience, not a second castle. If you are carrying ore, sell at the miner before you go looking for a glowing king in the snow biome. Griefers hunt that route. PvP.
What the castle is not
It is not a Trello board. This game has no official Trello — links. It is not where codes hide. It is not required for Fire God. It is not Solo Player Style; that is the waterfall fighting style.
If Biwa Woman does nothing, you lack the pass and the art. Rejoin if the GUI died. Session tycoons drop prompts.
The pass stays on the account. The cash buy for the art does not. Community comments on Moon showcases keep asking whether Infinity Castle plus Moon is “permanent.” Answer: 10 R$ Easy Teleport and 700 R$ Moon Art remain yours; you still rebuild $100k and reagents next join, then talk to Muzan again if Destructive or Chaos is not on the hotbar. Same rule as Fire God.
What you spend souls on here
One soul per ritual. Do not walk in with two arts and one soul expecting a bundle. Slayer Marks are not this counter — that is The Master at HQ.
Route from a Demon pad
Frequently Asked Questions
Quick answers to the most common questions.
How do I get to Infinity Castle in Slayer Tycoon?
Talk to Biwa Woman at the train tracks with the 10 R$ Easy Teleport pass or Biwa Art.
Do I need Infinity Castle as a Slayer?
Not for Slayer Marks. Those are The Master at HQ. Castle is Muzan’s desk. Awakening.
Is the teleport pass required?
No. Biwa Art also qualifies. Ten Robux is just faster than farming Nakime’s kit.
Can I fight Muzan as a boss?
He is an awaken vendor, including a night map spawn. Train bosses are a different spawn. Bosses.
Does buying Infinity Castle keep Moon Art forever?
The Robux passes stay. Cash kits reset. Rebuild cash, then talk to Muzan again. Moon Art.