Update 15 pushes Anime Astral Simulator into Fate territory. World 19 is Fuyuki City, and it arrives with a raid built around the Holy Grail War, a Servants summoning system with its own combat behavior, a third sword banner, and a fresh set of multiplier grinds layered on top of the ones already in the game. Here is what the update actually contains and the order worth tackling it in.
Quick answer: Open the Teleport menu, spend 1 World Token to unlock World 19 (Fuyuki City), then teleport in and start the new quests, world boss, and Holy Grail War raid.
What Update 15 adds to Anime Astral Simulator
The headline addition is the world itself, but most of the update’s long-term value sits in the systems bolted onto it.
- Fuyuki City as World 19, with its own quests, title, and world boss
- 10 new pets and 7 new avatars
- New accessories, including raid-exclusive drops
- The Holy Grail War raid and the Servants gacha system
- Mana Contract, Mystic Code, Magecraft Progression, Sword Banner 3, Shadow Passives, and Zenkai
- Party bonuses for group content and a raised max level cap
How to unlock World 19 (Fuyuki City)
Check your active boosts before you roll the Fuyuki City banner. The world star gacha is priced in Yen and the auto-roll drains it quickly, so swapping to a Yen-focused loadout first meaningfully changes how many pulls you get out of a session.
Holy Grail War raid: keys, waves, and drops
The Holy Grail War is the update’s group activity, and it gates entry behind Command Seal Keys. Without a key you can still join a lobby someone else creates, but you cannot open your own run.
The raid pays out in currencies you will need for the rest of the Fate content, plus accessories that only drop here:
- Grail Shards
- Fate Tokens
- Relic Tokens
- Raid-exclusive accessories
Servants gacha and the Mana Contract system
Servants are a separate collection line from pets, with rarities running all the way up to Astral. They fight alongside you rather than sitting as a static stat stick, and the banner supports auto-rolling if you want to burn currency in bulk. Pulls like Saber Alter show up in the higher brackets.
Duplicates are handled cleanly. Once you own a Servant, its entry picks up a checkmark in the collection view, so you can tell at a glance which rolls are new and which are filler.
Mana Contract is where you decide how a summoned Servant behaves on screen. The menu offers two display modes, Accompany and Positioned, letting you either have the Servant follow you around or hold a fixed spot. It is a presentation and placement setting rather than a damage upgrade, but it changes how crowded your screen gets while farming.
Sword Banner 3: rarities, Astral pulls, and fusing
Sword Banner 3 runs the same rarity ladder as the previous weapon banners, but the top brackets are Fate weapons. The named chase items sit at the three highest tiers.
| Tier | Named weapon |
|---|---|
| Secret | Rhongomyniad |
| Divine | Arondight |
| Astral | Sword of Rupture |
Everything below Secret fills out the Common through Legendary range, and the odds are listed in the banner window before you commit currency. Check them before an auto-roll session so you know roughly how deep you need to go.
Rolling the banner also produces mid-tier Fate swords such as Balmung and Excalibur, which land in the Swords tab of your inventory. From there you can feed duplicates and lower-tier blades into weapon fusing to push a single sword’s scaling instead of leaving a pile of one-off pulls sitting unused.
Multiplier systems worth upgrading first
Update 15 stacks several progression tracks that all feed the same two stats, Power and Yen. They are worth treating as a rotation rather than picking one.
| System | What it raises |
|---|---|
| Magecraft Progression | Power and Yen multipliers, with auto-roll |
| Mystic Code | Fate-line gacha upgrades |
| Scientific Modifications | Body upgrade nodes |
| Shadow Passives | Passive ranks on assigned shadows |
Magecraft Progression and Mystic Code
Magecraft Progression is the most hands-off of the group. Open it, set it to auto-roll, and it keeps grinding your Power and Yen multipliers upward while you do something else. Mystic Code sits next to it as a separate gacha window tied to the same Fate content.
Scientific Modifications
The Scientific Modifications menu holds discrete upgrade nodes you buy outright, including Enhanced Muscular System, Modified Combat Arms, and Artificial Chakra Core. Each one is a flat purchase, so clear them in order rather than saving for a single big node.
Shadow Passives
Shadow Passives use an altar interface where you assign a shadow, Beru being the obvious candidate, into the queue and roll for higher passive ranks. Rolls consume shadow passive tokens, and the resulting ranks feed into your damage scaling rather than showing up as a visible stat on the shadow itself.
Zenkai resets, global quests, and party bonuses
Zenkai is a power reset loop, and it lives back in Namek City rather than in Fuyuki City. Teleport there and open the Zenkai interface to see a power level progress bar alongside the boost multipliers a reset would grant. It is the one system in the update that asks you to give up progress to gain a permanent multiplier, so read the bar before committing.
Global Quests are the fastest free power in the update. Open the Global Quests panel and claim anything already completed, since these hand out large power boosts you may be sitting on without realizing it. Alongside that, party bonuses now factor into damage calculations for group content, and the max level cap has been raised.
New pet, accessory, mount, and bundles
Once you have rolled for a while, the Inventory is where you sort it out. Tabs cover potions, materials, accessories, swords, titans, shadows, mounts, runes, and primordials, and the new Fate gear slots into the same structure as everything from earlier worlds.
On the equipment side, the update introduces an exclusive Ichigo pet with its own pet passives to configure, the Fou accessory, and the Xiang mount. Equip the pet and set its passives before your next farming stretch, since passives do nothing until assigned.
The Exclusive Shop carries three paid packages for this patch: Ultimate Bundle 6, Accessory Bundle 4, and Potions Bundle IV. None of them are required to unlock or clear the new content.
Codes
Update 15 ships with a batch of working codes alongside the usual visit and favorite milestone rewards: UPDATE15, SERVANTS, SHADOWPASSIVE, and ZENKAI. To redeem, launch Anime Astral Simulator on Roblox, open the Codes window, type a code exactly as written, and press redeem.
The efficient run through Update 15 looks something like this: spend the World Token, claim your Global Quests, redeem what is available, then settle into the Holy Grail War for Grail Shards and Fate Tokens while Magecraft Progression auto-rolls in the background. Sword Banner 3 and the Servants banner are the money sinks, and Zenkai is the decision to make only once your power bar justifies it.
