Bosses

Demon Slayer

Demon Slayer is a Void World boss. The published check is 862.5qi (Biceps) recommended strength against 750qi (Biceps) boss strength.

Demon Slayer in Arm Wrestle Simulator

Demon Slayer: Demon Slayer is a Void World boss. The published check is 862.5qi (Biceps) recommended strength against 750qi (Biceps) boss strength. Get it by Walk to the Void World boss area and interact with Demon Slayer. Use it to Clear Demon Slayer for the listed Wins, then move to the next boss in Void World once…

What is Demon Slayer?

Fight Demon Slayer in Void World when your relevant strength is at least near the published recommendation of 862.5qi (Biceps). The same table lists the boss at 750qi (Biceps) and a Win reward of +150sx. The August 23, 2026 Void guide lists this fight on Biceps. Use the interact prompt beside the boss, then tap through the arm wrestle. If a stat in parentheses is shown, that guide tied the check to that training stat.

Published facts

Demon Slayer facts
FactValue
WorldVoid World
Recommended strength862.5qi (Biceps)
Boss strength750qi (Biceps)
Win reward+150sx

How do you get Demon Slayer?

Walk to the Void World boss area and interact with Demon Slayer.

How do you use Demon Slayer?

Clear Demon Slayer for the listed Wins, then move to the next boss in Void World once the recommendation is in reach. Repeat a boss you can finish quickly when a harder neighbor takes much longer for less Win income.

FAQ

Demon Slayer questions

How do I leave the School?

Defeat Champion and hold 15,000 Wins. The Escape School door next to the bosses is the published exit into the Gym.

What does Rebirth reset?

The August 17, 2026 guide says a normal Rebirth spends Wins, sets Bicep, Hand, and Knuckle strength to 0, and keeps Trails plus your remaining Wins. Super Rebirth also resets Trails, Wins, and worlds, keeps Arms, and gives tokens worth +100% Total Strength each while you hold them. Another rebirth listing describes a flat +15% per rebirth and a different keep list, so confirm the button text.

Where do I enter a code?

Look for a Codes button on the side of the screen, or open Store and use the Codes control, then press Verify. Each code is once per account. Lists published October 1 and October 2, 2026 disagree about harborking, so that string is not marked active or expired here.

How many worlds are there?

The official experience listing says 28 worlds. A published world index names 19 normal worlds, and only School through Space Center have exit numbers here. The official listing says 28 worlds, so later names are missing.