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Castle Rush guide for Ancient Dragon's Castle in Seven Knights Re:Birth. Covering Friday's Jave Castle Best Team, Best Heroes, Strategy, Tips, and How to Get the Highest Score.
Table of Contents
Castle Rush Guide & Best Heroes to Use
Ancient Dragon's Castle (Friday) Jave Basic Information
Enemy Information
| Enemy |  Jave Rook Chancellor |
| Enemy Attack Type |  Physical |
| Status Effects Inflicted |  Dragonflame (counted as Burn) Stun |
| Effective Status Effects | None |
| Other Characteristics | - Uses Counterattacks - When Counterattacking: 100% Crit Rate + 500% Crit Damage - Deals Piercing Damage - Damage Resistance against Magic Attacks / Single-Target Skills / 5-Target Skills - Berserk activates after Turn 30 (Damage dealt rises by 50% → 100% → 200% → 500% as turns pass) |
Main Rewards
| Category | Reward Details |
| Individual Rewards |  Guild Token Gold Key Castle Rush Challenge Medal |
| Guild Rewards |  Hero Summon Card for Each Castle Rush Rank Gold Box for Each Castle Rush Rank Castle Rush Challenge Medal |
| Castle Rush Challenge Mission |  Key Box Ultimate Enhancement Material Leah Skill Enhancement Stones Gold Rare Hero Selection Card Hero Summon Ticket |
Castle Rush offers Individual Rewards, Guild Rewards, and Castle Rush Challenge Mission Rewards. The higher your Guild's Castle Rush rank, the better your odds of getting a Seven Knight from the Guild Reward Hero Summon Cards, so aim for a high score together with your Guild Members!
 Tips! | You can also exchange 4,000 Castle Rush Challenge Medals for a Seven Knights Summon Card at the Guild Exchange Shop. |
|---|
Tips for Clearing Ancient Dragon's Castle (Friday) Jave
Burn and Stun Immunity Are a Must
The enemy inflicts Dragonflame and Stun, so be sure to include heroes with Burn Immunity and Stun Immunity. Ryan, who can shorten his cooldown, and Sieg, who can boost Physical Attack, are Best, but if they're not raised yet, Evan or Yui can be used instead.
Use Physical Attacks That Hit 3-4 Targets
All enemies in Ancient Dragon's Castle have Damage Resistance against Magic Attacks, Single-Target Skills, and 5-Target Skills, so attack with Physical Attacks that hit 3-4 targets. Taka, Ryan, and Sunran are especially Best, but if you don't have them, it's better to train the Rare hero Feng Yan.
| Tips! | Note that Rachel's Skill 1 is a single-target attack until she reaches Transcendence 6. |
|---|
First, Clear Rounds 1-2 Quickly
Castle Rush has 3 rounds, and the boss Jave appears in Round 3. You need to raise your score as much as possible within 70 turns, so clear Rounds 1-2 quickly using your Main DPS and Sub-DPS attacks.
Prioritize Blind, Barriers, and Damage Debuffs
Once you reach Round 3, counter Jave's critical attacks with things like Ryan's or May's Blind, Evan's Barrier, and Rachel's DPS Debuff. Ideally, enhance Ryan's Skill 1 to give him Physical Attack Reduction.
| Tips! | Raise Rachel to Transcendence 6, where her Skill 1 becomes a 3-target attack, so that her DPS Debuff lands on Jave. |
|---|
Boost Damage With Buffs and Debuffs
Next, use Buffs and Debuffs to boost your DPS's damage. It's Best to cast the Buffs/Debuffs with the longest duration first.
Whittle Down HP With Attackers
Once the field is set up with Buffs and Debuffs, use your back-row Attackers to whittle down the enemy's HP. Even if you used their skills back in Rounds 1-2, they'll usually be ready to use again by the time the field is set.
Progress Enhancement, Evolution, and Other Training
To raise your score, training like Enhancement, Evolution, and Ultimate Enhancement is important. In particular, it's Best to prioritize Ultimate Enhancement and Skill Enhancement for your Attackers, as this makes it much easier to boost your score.
How to Efficiently Train Heroes
Best Team Comps
Eileene Team for Intermediate to Advanced Players
Team Comp | Formation: Balanced
Debuff
Stun Immunity
Burn Immunity
Blind
This is a Physical Team built around Ryan and Rachel. Depending on how each hero is trained, this comp may yield a higher score. Also try comps with Taka or Sunran, and use whichever gives you the highest score.
Target Stats
| Hero | Target Stats | Notes |
|---|---|---|
|  100% | Since she's a Magic-type hero, a more defense-focused build is Best |
 80%~ | Increases the status ailment ring's inflict rate | |
|  Needs adjustment | Should be 3rd or lower in the party |
 80%~ | For boosting score | |
 200%~ | The higher, the better | |
 50%~ | 70%~ with Rachel's buff | |
| Needs adjustment | Should be 3rd or lower in the party |
| 80%~ | For boosting score | |
| 200%~ | The higher, the better | |
| 50%~ | 70%~ with Rachel's buff | |
| 4400~ | Should be 1st-2nd in the party |
| Around 90% | The higher, the less score variance | |
| 200%~ | The higher, the better | |
| 20%~40% | 81%-100% with Biscuit's/Rachel's buffs | |
| 4500~ | Should be 1st-2nd in the party |
| Around 90% | The higher, the less score variance | |
| 200%~ | The higher, the better | |
| 20%~40% | 81%-100% with Biscuit's/Rachel's buffs | |
 - | Should be 3rd-4th in the party |
This shows the skill order when Ryan's Speed is set to 3rd-4th in the party. Depending on how many times Jave counterattacks, your allies can be defeated easily, so it's especially Best to raise your Attackers' Defense and HP through Potential.
Best Equipment & Rings
Biscuit is Best with Spellweaver equipment and a status ailment ring. The others are Best with Avenger equipment, but this makes them easier to defeat, so at minimum equip Sieg with the Ring of Authority. Depending on the situation, the Ring of Authority can be an option for other heroes too.
| Tips! | Refining into the Ring of Authority is only the ideal setup. Since it has low versatility and becomes harder to use elsewhere, you don't have to force yourself to refine it. |
|---|
Best Pets
| Ideal | Alternative | Alternative | Low Rarity |
|---|---|---|---|
 Windy |  Eirin |  Igris |  Sherry |
For your pet, Windy, who can inflict Boss Vulnerability, is the Best choice. If you don't have her, substitute with Eirin or the Rare Collaboration pet Igris.
Alternative Heroes
| Main Pick | Alternative Heroes | Notes |
|---|---|---|
|  Yui | Early-game Burn Immunity |
|  Evan | Early-game Stun Immunity |
|  Sunran | Buff/Debuff substitute |
 Taka | Extra attacker | |
 Kyle | Extra attacker | |
 Feng Yan | Extra attacker (early-game) |
Depending on your investment, swapping Eileene for Sunran or Taka can sometimes boost your score.
If Ryan or Sieg aren't built up yet, it's also fine to swap them for Yui or Evan, who you'd use in the Power Up Dungeon or Raids.
Skill Usage Order
In the later half, Jave's Counterattack count can throw off skill cooldowns, so if Ryan's skill is available, use it before Sieg's or Eileene's.
| Tips! | Whether Rachel's or Eileene's Revive skill triggers can also throw off skill cooldowns. |
|---|
Team With Taka for Intermediate to Advanced Players
Team Comp Formation: Defense
Stun Immunity
Burn Immunity
Blind
Debuff
This is an example Physical team that uses Taka and Ryan as its two attackers. If Taka is more developed than Sunran, this team comp is the Best choice.
| Tips! | Jave has lower Max HP than Dellons or Spike, so Sunran's HP-based Attack is a bit harder to make full use of here. |
|---|
Target Stats
| Hero | Target Stats | Notes |
|---|---|---|
| 100% | Since she's a Magic-type hero, it's Best to lean toward tankiness |
| 80%+ | Boosts the status ailment ring's application rate | |
|  Needs adjusting | Keep lower than Taka and Ryan |
| 80%+ | For boosting score | |
| 200%+ | The higher, the better | |
| 50%+ | 70%+ with Rachel's buff | |
| Needs adjusting | Keep lower than Taka and Ryan |
| 80%+ | For clearing Wave 2 and boosting score | |
| 200%+ | For clearing Wave 2 and boosting score | |
| 60-80% | 80-100% with her passive | |
| 4500+ | 1st-2nd highest in the team |
| 80%+ | The higher, the less score variance | |
| 200%+ | The higher, the better | |
| 20-40% | 81-100% with Biscuit's/Rachel's buff | |
| - | 5th in the team | |
| 4500+ | 1st-2nd highest in the team |
| 80%+ | The higher, the less score variance | |
| 200%+ | The higher, the better | |
| 20-40% | 81-100% with Biscuit's/Rachel's buff | |
| - | 4th in the team |
It's Best to lower attackers' Speed so they can benefit from buffs longer, but putting Ryan 5th throws off his Cooldown Reduction timing, so make Ryan 4th and Taka 5th.
Best Equipment & Rings
It's Best for Biscuit to run Spellweaver gear with a status ailment ring. The others are Best equipped with Avenger gear, but that makes them easier to take down, so at minimum, equip Sieg with the Ring of Authority. Depending on the situation, the Ring of Authority can also be an option for the other heroes.
Best Pets
| Ideal | Alternative | Alternative | Low Rarity |
|---|---|---|---|
| Windy | Eirin | Igris | Sherry |
Windy, who can inflict Boss Vulnerability, is the Best pet overall. If you don't have her, substitute Yeonji or the Collaboration Rare pet Igris.
Alternative Heroes
| Main Pick | Alternative Heroes | Notes |
|---|---|---|
| Yui | Early-game Burn Immunity |
| Evan | Early-game Stun Immunity |
| Feng Yan | Early-game Physical attacker hitting 3 enemies |
| Sunran | Alternative Physical attacker hitting 4 enemies | |
| Kyle | Alternative Physical attacker hitting 4 enemies |
If Sunran is more developed than Taka, swapping her in can boost your score in some cases. If Ryan or Sieg aren't built up yet, it's also fine to swap them for Yui or Evan, who you'd use in the Power Up Dungeon or Raids.
Skill Usage Order
To make the most of the Damage Nullification granted when Taka uses his skill, the key is to alternate skills between Taka and Ryan as much as possible.
In the late game, if your attacker gets defeated, try changing the timing of Ryan's Physical Attack Reduction skill instead.
Sunran Team for Intermediate to Advanced Players
Team Comp Formation: Balanced
Stun Immunity
Burn Immunity
Blind
Debuff
This is an example Physical team built around two attackers, Sunran and Ryan. If Sunran is more developed than Taka, this comp is best.
| Tips! | Jave has lower Max HP than Dellons or Spike, making Sunran's Max HP-based attack a bit harder to make use of, so depending on your development, Taka may yield a higher score. |
|---|
Target Stats
| Hero | Target Stats | Notes |
|---|---|---|
| 100% | As a magic-type hero, tanky stats are best |
| 80%~ | Boosts Status Ailment ring application rate | |
| Needs adjustment | Keep lower than Taka and Ryan |
| 80%~ | For boosting score | |
| 200%~ | The higher, the better | |
| 50%~ | 70%+ with Rachel's buff | |
| Needs adjustment | Keep lower than Taka and Ryan |
| 80%~ | For clearing WAVE2 and boosting score | |
| 200%~ | For clearing WAVE2 and boosting score | |
| 60%~80% | 80-100% with passive | |
| 5000~ | 1st-2nd highest in the party |
| 80%~ | The higher, the less score variance | |
| 200%~ | The higher, the better | |
| 0 | 100% Weakness Hit Chance at T6 | |
| - | 5th in the party | |
| 4500~ | 1st-2nd highest in the party |
| 80%~ | The higher, the less score variance | |
| 200%~ | The higher, the better | |
| 20%~40% | 81-100% with Biscuit/Rachel buffs | |
| - | 4th in the party |
It's best to lower your attackers' Speed so they stay buffed longer, but if Ryan is 5th, his Cooldown Reduction timing won't line up, so set Ryan 4th and Sunran 5th.
| Tips! | If your attackers keep getting defeated, raising Defense or HP through Potential or equipment is also an option. |
|---|
Best Equipment & Rings
Biscuit should equip Spellweaver gear with a Status Ailment ring. The others do best with Avenger gear, but that makes them easier to defeat, so at minimum, Sieg should equip the Ring of Authority. The Ring of Authority is also an option for the other heroes depending on the situation.
Best Pets
| Ideal | Alternative | Alternative | Low Rarity |
|---|---|---|---|
| Windy | Eirin | Igris | Sherry |
The best pet for this fight is Windy, who can inflict Boss Vulnerability. If you don't have Windy, use Eirin or the rare collab pet Igris as a substitute.
Alternative Heroes
| Main Pick | Alternative Heroes | Notes |
|---|---|---|
| Yui | Early Game Burn Immunity |
| Evan | Early Game Stun Immunity |
| Feng Yan | Early Game 3-Target PHY Attacker |
| Taka | Alternative 3-Target PHY Attacker | |
| Kyle | Alternative 4-Target PHY Attacker |
If Taka is more developed than Sunran, swapping him in may increase your score. If Ryan or Sieg aren't developed yet, you can also swap in Yui or Evan, who are used in the Power Up Dungeon or Raid.
Skill Usage Order
Sunran's Demon Face gains +3 more stacks each WAVE, so you can clear WAVE2 via the skill's auto-trigger at 6 stacks. Sunran's Awakening Skill targets all enemies and doesn't deal much damage, so avoid using it.
| Tips! | This skill order prioritizes Ryan's survival, since he acts 4th and has no Revive skill. |
|---|
Early Game Team
| Front | Front | Front | Front | Back |
|---|---|---|---|---|
| May Buff Applies Blind | Rachel Sub-DPS Debuff | Yui Healer Burn Immunity | Evan Tank Stun Immunity | Feng Yan Main DPS |
What is Castle Rush?
A Guild Content Where You Compete on Total Score
Castle Rush is a PvE (monster battle) content you can play through your Guild. Your individual score, based on the damage you deal, is tallied up by your Guild every day, and you receive rewards based on both your individual score and your Guild Rank.
Castle Rush Guide List
Castle Rush Guide & Best Heroes to Use
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|---|---|---|
 Tanjiro Kamado |  Zenitsu Agatsuma |  Giyu Tomioka |
 Shinobu Kocho |  Demon Slayer Colllab Guide |  Beginner & Returning Player Guide |
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