Sakura Stand Aizen Treachery Update – Codes, Evil Rest

The Sakura Stand Aizen Treachery Update has arrived in game, and it’s one of the most ambitious content drops yet. This update introduces Aizen Sosuke (Pre-Hōgyoku Fusion), a full map rework of Hueco Mundo, new crafting materials, a boss fight against Barragan, and the beginning of what will become a larger Aizen evolution storyline.

This guide covers how to get the Soul Reaper Spec, start the Aizen questline, where to find key NPCs and items, and what each new addition means for current and future gameplay.

New Spec: Aizen Sosuke (Pre-Hōgyoku Fusion)

This is the base version of Aizen, released as a Soul Reaper-exclusive questline spec. While it’s powerful on its own, the devs have confirmed that evolved forms of Aizen will be added in future patches — likely tied to the Completed Hōgyoku item.

• Unlock Requirement: Soul Reaper spec with Mastery 5+
• Questline Start: Talk to Aizen NPC (location not specified, but assumed in Soul Society or Las Noches)
• Signature Move: “T” (True Power) has an execution effect if used on a player with 20% HP or less

Note: This is just the beginning. More Aizen forms will be added later, and this base version helps test the reworked Hueco Mundo.

How to Become a Soul Reaper

Before you can begin Aizen’s questline, you must unlock the Soul Reaper spec.

Steps:

1. Equip the Starter Katana Spec
2. Defeat Normal Hollows (not Menos-class)
3. Soul Reaper unlocks randomly after enough kills (there’s no hard number, but it’s a drop-based transformation)

Tip: Only normal hollows drop the items needed for Soul Reaper — Menos do not.

New Boss: Barragan Louisenbairn

• Title: King of Hueco Mundo
• Location: Inside Hueco Mundo (likely accessible from Las Noches)
• Role: High-level boss that drops event materials or contributes to progression

Details on his drop pool are limited, but given Barragan’s lore and power, he may be tied to future Hōgyoku crafting or progression toward high-tier Espada specs.

New NPC: Evil Rest

• Location: Las Noches
• Function: Not explicitly stated, but likely tied to questing, lore, or advanced crafting
• May act as a mid-step between Hollow progression and future specs

New Craft: Incomplete Hōgyoku

How to Craft It:

You’ll need the following materials:

• Shattered Hollow Soul (drops from normal hollows)
• Cracked Mask (also drops from normal hollows)

Once you collect both, you’ll be able to use them to craft the Incomplete Hōgyoku, which is likely a key material for future Aizen evolutions and other high-tier specs.

Important Notes:

• Shattered Hollow Soul is also used in the crafting process itself
• Completed Hōgyoku is not yet obtainable, but its placeholder exists — likely reserved for future evolutions like Hōgyoku-Fused Aizen

New Items

Map Changes: Hueco Mundo Rework

• Hueco Mundo has been moved to a separate world/map
• Access method hasn’t been detailed, but likely via portal/NPC
• Las Noches remains a key location, now featuring Evil Rest NPC and likely the Barragan boss fight

This rework lays the foundation for future Hollow, Arrancar, and Espada-based content.

Extra Feature: Green Screen Room

A Green Screen Room has been added for content creators. Its entrance is located:

• In a building near the Forbidden Groves entrance

This is ideal for thumbnail captures, renders, or in-game cinematics.

Working Codes (September 2025)

The following Treachery Update codes are currently active and can be redeemed in-game for bonuses like yen, boosts, or materials.

Active Codes:

• ShatterKyokasuigetsu
• HuecoMundoExpansion
• EvilRest
• SOUL DESTRUCTION

Be sure to redeem them exactly as shown. Most codes are case-sensitive and expire after a short time.

The Treachery Update is more than just a content patch — it’s the foundation for Aizen’s full arc, new Hollow crafting systems, and the long-term evolution of Sakura Stand’s supernatural side.