Jiuyuan Complete Build Guide: The #1 Standard S Selector at E0, the Free Reality Shelter Signature Arc, the Bloom Team Icon

Key Answer: Jiuyuan is a 1.0 standard S-rank burst Main DPS — element Anima (Bloom), Arc Solid (dual pistols), JP CV Rie Tanaka, an elite courier of Sterry Express. Her core mechanic is the three-stage “Lethal Rose Pact → Rose Pact Bullets → Pact Settlement,” and her Ultimate burst is about 80% of her damage. Her signature Arc “Reality Shelter” is completely free (100% drop from the Tortoiseshell Butterfly in the Drift Ice Cinema), paired with a Type II driver block specialization (+6% Crit Rate each). She is the #1 standard 50-pull selector pick at E0 and the signature trigger of the Bloom team.

A mature, elegant dual-pistol gunner, the Bloom team’s signature, and an elite Sterry Express courier — Jiuyuan is called by the whole community the “#1 standard selector pick at E0” and the “god of additional-damage Main DPS,” and her signature Arc is completely free. This article lays out her mechanics, build, Eidolons, recommended teams, and investment path all in one place.

1. Character Basics

Item	Details
Chinese Name	九原
English Name	Jiuyuan (romanized as Kyuugen; also read “Joen” in Japanese)
Rarity	S-rank (standard pool)
Element	Anima / Bloom (the in-game zh translation also renders this as the “Anima” element)
Weapon Type (Arc)	Solid — dual pistols
Role	Burst Main DPS / Sub-DPS, the signature trigger of the Bloom team, able to swap quickly between on-field / off-field
Japanese CV	Rie Tanaka (officially confirmed)
Chinese CV	To be officially announced (defer to in-game)
Affiliation	Sterry Express — an elite-grade courier
Background	A mature, elegant, dual-pistol burst gunner

2. Skill Set — the Lethal Rose Pact three-stage loop

1. Basic Attack [When Secrets Take Shape]

• The 5th hit of the basic attack → applies the “Lethal Rose Pact” mark to the enemy
• Grants +2 Rose Pact Bullets at the same time
• ⭐ Her core damage source (upgrade priority ⭐⭐⭐⭐⭐)

2. Shift (E) [Intel Hunter]

• Applies “Lethal Rose Pact” to enemies in range + pulls and groups mobs
• Grants +4 Rose Pact Bullets in one go
• A prime tool for AoE and mob-grouping

3. Ultimate (Q) [Final Reckoning]

• Fires continuously, hitting every target marked with “Lethal Rose Pact”
• ⭐ Triggers Settlement damage (multiplier up to 400%)
• ⭐ Heals the whole team (scaled off accumulated Pact damage)
• Accounts for roughly 80% of her burst damage

4. Assist [Intel Lock-On]

• While off-field, automatically refills +2 Rose Pact Bullets
• Provides an Anima damage bonus

5. Passive / Bloom Enhancement

• While on-field, summons extra Vita Buds for the whole team
• Vita Buds auto-finish stragglers and help trigger “Lethal Rose Pact” plus extra Settlements

Combo Routine (standard)

E to group mobs + 4 bullets → 5-hit basic to apply the mark + 2 bullets → swap out (bullets persist)
→ swap back at full bullets → Final Reckoning Ultimate for a single big burst

3. Eidolons (Awakenings) Priority

Eidolon	Name	Effect	Priority
A2	Information Blade	Pact Settlement damage +100% (doubled) + heals the whole team for 5% HP from the Settlement	⭐⭐⭐⭐⭐ most critical
A4	Lethal Strike	Active Settlement damage +50%, and converts it to AoE damage	⭐⭐⭐⭐
A1	Attack Amplification	+5% ATK for each “Lethal Rose Pact” target on the field (up to +15%)	⭐⭐⭐
A5	Mark Vulnerability	+8% damage against “Lethal Rose Pact”-marked targets	⭐⭐⭐
A3	Advantage Secured	The Ultimate gains added stagger-break	⭐⭐
A6	Pact Vulnerability Expansion	Skill damage against marked targets gains an extra ×200% multiplier	⭐

Conclusion: E0 is already full-power T0 (the #1 standard selector pick); A2 is the biggest game-changer (damage doubled + team healing); A4 and A1 greatly boost her burst.

4. Best Build

⭐ Arc: Reality Shelter (free BiS!)

Stat	Value
Sub Stat	ATK % (base ATK +570 / +30%)
Core Passive	Anima DMG +15-25%; additional damage +10%; rises to +20% for 6 seconds after the Ultimate (up to 30% in some versions)

How to Obtain (completely free!)

1. Character level 35+
2. Push the main story to Senda Avenue / Kino Avenue in the New Herland District
3. Start the Anomaly commission “Let’s Go to the Movies”
4. Teleport to the Drift Ice Cinema, take the stairs on the left up to the 2nd floor, then keep turning left to the very last room
5. Interact with the projector to start the Boss fight → defeat the Tortoiseshell Butterfly → 100% drop

Shop fallback: redeem for 25 keys (not recommended — the free route is enough)

Alternative Arcs

Order	Arc	Notes
2nd pick	Fluff of Fearlessness (ATK +512 / Crit Rate +22%)	Best value among non-signature S-rank Arcs
3rd pick	Blow Up the Crowd	An attack-type S-rank Arc
Transitional	A-rank attack-type Arc	Usable in early-game

Gear: Fireflies & Forest 4-piece set

• 2-piece: Anima DMG +10%
• 4-piece: when a nearby enemy takes Anima damage, the wielder gains Crit DMG +8%, stacking up to 7 times = +56%, lasting 10 seconds, retained while off-field
• Transitional option: Fireflies & Forest 2-piece + Shadow Creed 2-piece (double 2-piece)

Main Stat + Sub Stat Priority

Slot	Priority
Main Stat	ATK% / Anima DMG / Crit Rate / Crit DMG
Sub Stats	Crit Rate > Crit DMG > ATK% > generic damage%

Dual-crit target: Crit Rate ≥ 70% / Crit DMG ≥ 150%

⭐ Driver Block Shape: Type II specialization

Jiuyuan’s console passive: +6% Crit Rate for each Type II module equipped!

• 5× Type II → a free +30% Crit Rate (before any sub-stats)
• Recommended layout: 3× Type II (vertical) + 2× Type II (horizontal) + 1× Type III (vertical) + 1× Type III (L) + 1× Type IV (N)

5. Recommended Teams

1. Bloom Signature Team (strongest)

Jiuyuan + Nanally (Main DPS) + Sakiri + Esper Zero (protagonist)

An early CN-server community version is also common: Jiuyuan + Esper Zero + Sakiri + Fadia (healing-oriented) Stack double Anima / Cosmos Bloom, with Esper Zero handling the quickswap to trigger the loop

2. AoE Mob-Grouping Team (best for clearing mobs)

Jiuyuan + Nanally + Sakiri + Mint

E groups mobs + Nanally follows up with sustained damage + Sakiri / Mint provide buffs — top-tier mob-clearing efficiency

3. F2P Lineup (fully free)

Jiuyuan + Esper Zero + Haniel + Mint

Alternative: Jiuyuan + Chiz + Hathor + Fadia (energy-charging loop team)

4. Discord Team (Chaos / dissonance)

Daffodill + Jiuyuan + Baicang + Fadia — strong AoE coverage

6. Investment Priority

1. Ascend to Lv 80 / 90 (raise the level cap)
2. Skill upgrades: Q (Final Reckoning) → E (Intel Hunter) → Basic Attack → Assist
   • 5/5 Q → 4/5 E → 3/5 Basic Attack → 2/5 Assist
3. Max out and ascend the Reality Shelter Arc (directly doubles the post-Ultimate burst bonus)
4. Get the Fireflies & Forest 4-piece set in place, prioritizing main stats Crit DMG / Anima DMG / Crit Rate
5. Driver block shape: set up 5 Type II pieces for a free +30% Crit Rate
6. Ascension materials: Fading / Blurred / Chaos Silhouette + Tear of the Sea + Beetle Coin

7. Pull / No-Pull Advice

A Must-Build at E0 ⭐⭐⭐⭐⭐

• Standard pool, #1 S-rank selector pick
• Completely free signature Arc, effectively a graduation weapon you get at launch

Launch 50-Pull Selector Order (community consensus)

Order	Character	Reason
1	Jiuyuan	The strongest Main DPS at E0
2	Sakiri	Whole-team 30% base ATK buff, universal support
3	Baicang	Strong Incantation DPS
4	Daffodill	The only Chaos-element DPS

If you already have Sakiri → pull Jiuyuan; if you already have Jiuyuan → pull Sakiri is the safest community call.

You can keep awakening her over time (standard-pool Eidolons are relatively easy to farm), making her the safest long-term investment.

8. Community Memes / Reception

• “God of additional damage (Affix DMG) Main DPS”
• “The signature trigger of the Bloom team”
• “Must-pull at E0 / #1 standard 50-pull selector pick”
• “SS / T0.5 tier” (T0 on the EN sites, SS on the JP sites)
• “The face of free S-rank graduation weapons” (Reality Shelter is completely free)
• Why is she the best at AoE and mob-grouping? — her Shift “Intel Hunter” pulls and groups mobs on its own + applies marks across the whole area + the Ultimate’s AoE settles every target at once + Vita Buds finish off stragglers throughout

9. Jiuyuan vs Other Standard Main DPS

Comparison	Jiuyuan	Baicang	Daffodill
Element	Bloom (Anima)	Incantation	Chaos
Strength	AoE mob-grouping + Bloom	Single-target Boss ceiling	Sustained DoT
Self-damage	None	Yes (3% HP)	None
E0 graduation difficulty	Lowest (signature Arc is a 100% drop in the Drift Ice Cinema)	Low (free signature Arc)	Low (free signature Arc)
Best for	Beginners / E0 / AoE preference	Single-target burst preference	DoT-sustain preference

Related Guides

• Signature Weapon (Signature Arc) Complete Guide — full Reality Shelter comparison
• Gear System Complete Guide — the Fireflies & Forest set
• Complete Anomaly Boss Bestiary — Tortoiseshell Butterfly (Drift Ice Cinema) strategy
• Elemental Reaction System — Bloom reactions
• Team Building Basics — Bloom team structure
• NTE Voice Actor Lineup — Rie Tanaka’s notable roles

FAQ

Jiuyuan’s data is compiled from public sources including Game8, GameWith, Prydwen, Kaiden.gg, Mobalytics, Icy Veins, ZeroLuck, Kamige Strategy, HN PlayNews, LDPlayer, Mobile01, 4Gamers, Bahamut, enjoygm, and others. Some Awakening percentages vary slightly between versions; the in-game text is authoritative.