To become a demon in Weak Legacy 2, you need to reach the winter/snowy area, find the demon-conversion NPC (often referred to as “Man,” “Muzan,” or “Doma”), and pay around 1,000 yen to transform. After that, you can grind more yen and levels to unlock a Blood Demon Art and really start playing as a full demon build.

Quick Scoop: Core Steps

  • Go from the starter village toward the snowy or winter village area; most guides show the demon NPC near or in that snowy region.
  • Look for an NPC named something like Man , Muzan , or a Doma-style demon NPC among several NPCs in the winter village.
  • Talk to that NPC and pay about 1,000 yen to instantly convert into a demon (no complicated ritual, just the fee).

Once you do that, your character swaps from human/slayer progression into demon progression.

Yen, Leveling & Timing

  • Most guides recommend farming up at least 1,000 yen first so you can convert the moment you reach the demon NPC.
  • Some step-by-step routes suggest being around low–mid levels (for example, after doing a few starter quests and basic grinding) so you can handle enemies in the snowy area safely.
  • After becoming a demon, aim for about 10,000 yen and higher levels to quickly unlock a Blood Demon Art (BDA) from specific demon art trainers like a Doma-style NPC in the snowy region.

Playing As a Demon: What Changes

Once you’re a demon, the fantasy flips: you’re no longer training breathing styles and slayer skills, but diving into demon abilities and BDAs.

  • You can earn and equip a Blood Demon Art, turning your kit into more aggressive, supernatural skills instead of sword-based breathing styles.
  • You’ll want to grind demon-side quests and mobs to level up your demon stats and your chosen BDA faster.
  • Some creators show demons keeping weapons at first, which can lead to fun hybrid-feeling gameplay while you get used to your new powers.

Extra Tips & Forum-Style Advice

“Don’t rush demon just because it’s edgy; decide early if you want Slayer or Demon so you don’t waste resets later.”

  • Follow a visual guide video while you walk to the winter village so you don’t get lost; many content creators run in a straight, repeatable route from the starter village to the demon NPC.
  • Use early quests that give repeatable yen rewards, then spam them until you can comfortably afford demon conversion and your first BDA.
  • Check updated guides or code hubs for yen/EXP codes; these can make reaching demon and BDA way faster, especially after new updates in 2025.

TL;DR: Farm at least 1,000 yen, travel to the winter village, talk to the demon NPC (often called Man/Muzan/Doma), pay to transform, then grind more yen and levels to unlock a Blood Demon Art and fully embrace your demon playstyle.

Information gathered from public forums or data available on the internet and portrayed here.