Chapter 1: The Eden Treaty

Main Story: Volume 3 - The Eden Treaty: Chapter 1 - The Whispers of War

Welcome, Sensei, to the comprehensive guide for Main Story: Volume 3 - The Eden Treaty in Blue Archive! This pivotal arc plunges Kivotos into a complex political landscape, focusing on the fragile alliance between Trinity General School and Gehenna Academy. As Sensei, you'll navigate diplomatic tensions, uncover hidden agendas, and confront formidable adversaries, all while striving to prevent a full-scale war. This guide will equip you with the knowledge and strategies needed to overcome every challenge and ensure the successful signing of the Eden Treaty.

The Eden Treaty arc is renowned for its compelling narrative and introduces several key characters and factions that will shape the future of Kivotos. Be prepared for increased difficulty compared to previous volumes, as enemies possess higher stats and more complex attack patterns. Strategic team composition, efficient EX Skill management, and understanding enemy armor types will be crucial for success.

Chapter 1: The Whispers of War - Overview

Chapter 1 sets the stage for the unfolding drama, introducing the initial tensions and the critical mission to escort the Trinity delegation. Your primary objective in this chapter is to clear the initial skirmishes and prepare for the more significant challenges ahead. Pay close attention to enemy types and begin assembling your core teams. This chapter features a mix of Light, Heavy, and Special Armor enemies, culminating in a challenging mini-boss encounter.

Recommended Student Level for Chapter 1: At least Level 40-45 for main damage dealers and tanks. Support students can be slightly lower but should still be able to survive.

Mission 3-1: Initial Deployment

• Location: Trinity Outskirts - A seemingly peaceful area that quickly becomes a skirmish zone.
• Objective: Clear all enemies within the time limit.
• Enemy Types: Primarily Light Armor (Red), with a few Special Armor (Purple) units mixed in. These are typically lower-tier thugs and some specialized Gehenna scouts.
• Recommended Students (Damage Dealers):
  • Explosive (Red) Damage:
    • Ideal Picks: Hoshino (Core tank/damage hybrid), Aru (High AoE burst), Mutsuki (Consistent AoE), Aris (Strong single-target, can clear waves).
    • Accessible Options: Akari (Starter, good AoE), Serika (Starter, decent single-target), Junko (High damage potential, but squishy).
  • Mystic (Purple) Damage:
    • Ideal Picks: Haruna (Excellent AoE), Izuna (Strong single-target), Chinatsu (Onsen) (Good AoE and utility).
    • Accessible Options: Chise (Good AoE), Suzumi (Decent AoE).
• Recommended Students (Tanks/Supports):
  • Tanks: Tsubaki (Exceptional evasion tank), Yuuka (Solid defense), Hoshino (If not used as damage).
  • Healers/Supports: Serina (Flexible spot healing), Hanae (Consistent healing), Fuuka (Cost reduction/healing).
• Strategy: This is a straightforward introductory mission designed to ease you into the volume. Focus on bringing a balanced team with good AoE (Area of Effect) damage to quickly clear the waves of enemies. Since there's a mix of Light and Special Armor, having at least one strong Explosive damage dealer and one Mystic damage dealer is ideal. Ensure your students' levels are at least 40. Don't waste high-cost EX Skills on the first few waves if you can clear them with basic attacks or lower-cost skills.
• Rewards: Basic Enhancement Stones (e.g., T1 Tactical Training Blu-ray), Credit Points (approx. 5,000-8,000).

Mission 3-5: Escort Route Ambush

• Location: Abandoned Highway - A desolate stretch of road, perfect for an ambush.
• Objective: Defeat the ambush force and secure the route.
• Enemy Types: A more challenging mix of Light Armor (Red) and Heavy Armor (Yellow) units. Expect more organized Gehenna forces, including heavily armored grenadiers and assault units.
• Recommended Students (Damage Dealers):
  • Explosive (Red) Damage:
    • Ideal Picks: Iori (Exceptional single-target), Hifumi (Good AoE and crowd control with Peroro), Tsubaki (Tank, but her EX can deal some damage).
    • Accessible Options: Akari (Good AoE), Serika (Decent single-target).
  • Piercing (Yellow) Damage:
    • Ideal Picks: Nonomi (Excellent AoE), Shiroko (Reliable single-target), Junko (High damage potential).
    • Accessible Options: Serika (If you need more Piercing, though her primary is Explosive), Pina (Can contribute if leveled).
• Recommended Students (Tanks/Supports):
  • Tanks: Tsubaki (Essential for absorbing damage), Yuuka (Reliable front-liner), Hoshino (Good survivability).
  • Healers/Supports: Serina (Crucial for keeping your tank healthy), Hanae (Consistent healing), Kotama (ATK buff for damage dealers).
• Strategy: You'll encounter a significant number of Heavy Armor units here. Prioritize taking down the Heavy Armor units with your Piercing damage dealers first, as they often pose a greater threat due to their higher defense against other damage types and sometimes possess dangerous AoE attacks. Keep your tank student (e.g., Tsubaki, Yuuka) at the front to absorb damage. Use your Explosive damage dealers to clear the Light Armor units efficiently. Good EX Skill management is key here; save your high-cost Piercing EX Skills for the Heavy Armor enemies.
• Rewards: Intermediate Enhancement Stones (e.g., T2 Tactical Training Blu-ray), Credit Points (approx. 8,000-12,000), Skill Materials (e.g., Trinity Skill Notes, Gehenna Skill Notes).

Mission 3-10: Gehenna's Fury - Mini-Boss Encounter

Mission 3-10: Gehenna's Fury marks your first significant challenge in the Eden Treaty arc, featuring a mini-boss encounter that demands careful planning and execution. This mission serves as a crucial test of your understanding of enemy armor types and EX Skill management. The mini-boss, a Gehenna Vanguard Leader, is a heavily armored unit designed to break through enemy lines.

Mission Details:

• Location: Gehenna Border Checkpoint - A fortified position guarding the border, heavily defended.
• Objective: Defeat the Gehenna Vanguard Leader (Mini-Boss) and all accompanying forces.
• Boss Armor Type: Heavy Armor (Yellow). This means Piercing (Yellow) damage will deal 200% damage, Explosive (Red) will deal 50%, and Mystic (Purple) will deal 20%.
• Enemy Types (Pre-Boss Waves): A mix of Light Armor (Red) and Heavy Armor (Yellow). These are standard Gehenna grunts and some elite guards.
• Recommended Student Level: At least Level 45 for your main combat students (tank, damage dealers). Ideally, your main damage dealers should be Level 50+ to ensure sufficient damage output.
• Recommended Skill Levels: Main damage-dealing skills (EX Skill, Basic Skill) should be at least Level 3, preferably Level 4 or 5. Sub Skills and Enhanced Skills should be at least Level 2-3.

Strategy & Team Composition:

The Gehenna Vanguard Leader possesses high HP and significant defense against non-Piercing damage. Your primary focus must be on maximizing Piercing (Yellow) damage output. Neglecting this will make the fight significantly longer and more difficult.

Core Team Archetype:

• 1x Tank: A student with high defense and HP, capable of drawing enemy fire and absorbing the boss's attacks.
  • Top Tier Picks: Tsubaki (Exceptional evasion and taunt, making her ideal for single-target boss fights), Yuuka (Solid defense and shield).
  • Accessible Options: Hoshino (Good HP and self-sustain), Haruka (Can be very tanky if invested).
• 2-3x Piercing Damage Dealers: Your main source of damage against the boss. Prioritize students with strong single-target EX Skills.
  • Top Tier Picks: Iori (Exceptional single-target Piercing damage, often considered best-in-slot for yellow armor bosses), Nonomi (Good AoE and decent single-target with her EX, useful for clearing waves before boss), Shizuko (Swimsuit) (Strong single-target, can also provide utility).
  • Excellent Alternatives: Shiroko (Reliable single-target EX Skill), Akari (Good burst damage, especially if you need to clear surrounding units), Junko (High damage potential, but can be squishy and requires careful positioning).
  • Accessible Options: Serika (Starter student, her EX is Explosive but her basic attacks are Piercing, making her a secondary option if others are unavailable), Pina (Can contribute if leveled, but generally lower priority).
• 1-2x Support/Healer: To sustain your team, especially the tank, and potentially provide buffs to your damage dealers.
  • Top Tier Picks: Serina (Flexible, low-cost spot healing, essential for keeping tank alive), Hanae (Consistent healing over time), Kotama (Provides a significant ATK buff, crucial for maximizing damage), Ako (If available, her critical buffs are game-changing for burst damage).
  • Accessible Options: Fuuka (Cost reduction and healing), Chinatsu (Decent healing).

EX Skill Management for Burst Damage:

The Gehenna Vanguard Leader has specific attack patterns and can deal considerable damage, especially with its charge attack. To clear the stage within the time limit and minimize damage taken, you need to manage your EX Skills effectively:

• Wave Clearing: Use lower-cost AoE skills (e.g., Nonomi's EX, Akari's EX) to quickly dispatch the preceding waves of Light and Heavy Armor enemies. Save your high-cost, single-target Piercing EX skills for the boss.
• Boss Phase: Once the Gehenna Vanguard Leader appears, focus all your Piercing damage on it. Stack ATK buffs (Kotama, Ako) before unleashing your main damage dealer's EX skill (Iori, Shiroko).
• Healing: Keep a close eye on your tank's HP. Use Serina's EX skill proactively if you anticipate a heavy hit, or reactively if their HP drops significantly.
• Interrupts/Crowd Control: While not strictly necessary for this boss, some students with stun or crowd control can briefly interrupt the boss's attacks, buying precious seconds for healing or damage.

Common Pitfalls & Tips:

• Underestimating Armor: Attempting to brute-force the boss with non-Piercing damage will lead to failure. Respect the armor type.
• Neglecting Tank: The boss hits hard. A well-leveled and healed tank is paramount. If your tank falls, your backline will quickly follow.
• Wasting EX Skills: Don't use your powerful, high-cost EX skills on regular mobs unless absolutely necessary. Save them for the boss.
• Student Positioning: Ensure your tank is at the front, drawing aggro. Your damage dealers should be safely behind, maximizing their uptime.
• Gear & Equipment: Ensure your main students have their equipment slots filled and upgraded. Even T1-T2 gear can provide significant stat boosts.

Rewards:

• First Clear: Pyroxene x30, Credit Points x15,000, T3 Tactical Training Blu-ray (Trinity/Gehenna).
• Subsequent Clears: Credit Points x10,000-12,000, T2-T3 Enhancement Stones, Skill Materials (e.g., Trinity Skill Notes, Gehenna Skill Notes), occasionally T3 Tactical Training Blu-rays.

Chapter 1: The Whispers of War - Full Mission List & Rewards

Below is a comprehensive list of all missions within Chapter 1 of Volume 3, along with their primary enemy types and notable rewards. Plan your teams accordingly!

Completing all missions in Chapter 1 will not only advance the story but also provide a significant boost to your resources and student development. Remember to tackle the Hard Mode versions of these missions once available for even better rewards, including student Eleph and higher-tier equipment materials.