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Season 9 Tower of Trials for Seven Knights Re:Birth. The guide is for clearing the 6th Floor (Sera). It includes tips, enemy info, and the best team for obtaining all 6 medals.
Season 9 Tower of Trial 6th Floor: Sera
Enemy Information
| Period | Until 21:00 (UTC+0), March 18, 2026 |
| Floor | 6F |
| Enemy Formation |  |
| Speed | 500 |
| Turn Limit | 200 turns |
| Key Features | - 30-hit Damage Immunity for all damage - Crit Rate Boost - When an ally is incapacitated, reduce CT by 30s. - Fixed Damage - Buff duration reduction |
Additional Rules List
| Medals | Additional Rule/Details |
| -1 | [Ally]Max HP Boost[Always Active] Max HP is boosted by 100%. |
| -1 | [Ally]Incoming Healing Boost[Always Active] Incoming healing is boosted by 36%. |
| +1 | [Enemy]Basic Attacks inflict Unable to Recover[Always Active] Unable to recover HP. |
| +1 | [Enemy][Sera]'s Skill 2 grants Fixed Damage Boost[Always Active] When using [Shadow Wraiths], Fixed Damage increases to 6,000. |
| +1 | [Enemy]Magic Attack Reduction[Always Active] Blocks magic damage. |
Team Composition & Strategy Tips
- Quickly remove the Damage Immunity
- Bai Jiao, Lu Bu, and Kyle are recommended - When HP is low, use a Barrier
- Evan is recommended - Once the immunity is removed, attack with Shane
- Depending on her damage output, a one-shot kill is possible
Remove the Damage Immunity
Sera has a 30-hit Damage Immunity. Use heroes like Bai Jiao, who can inflict Bleed and Poison, or multi-hit heroes like Lu Bu and Kyle to reduce the immunity count and remove it as quickly as possible.
When HP is Low, Use a Barrier
| Barrier/Shield Heroes | |||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
 Rook | Evan | Asura | |||||||||
Due to the additional rule that inflicts Unable to Recover on Basic Attacks, using Heals is difficult. Therefore, use a Barrier when your HP gets low. Evan, with his Defense Boost passive, is highly recommended.
Once the Immunity is Removed, Attack with Shane
Once the Damage Immunity is removed, attack with a Back Row attacker. Since there is only one enemy and the Magical Attack Reduction rule is in effect, a single-target Physical attacker like Shane is recommended. The enemy's durability isn't very high, so a one-shot kill is possible depending on your damage output.
Best Team & Pets
Basic Party Example
Evan
Bai Jiao
Lu Bu
Kyle
ShaneThis is a basic party example where Evan provides durability support, Bai Jiao, Lu Bu, and Kyle remove the Damage Immunity, and Shane attacks. Bai Jiao does not need high damage output, so Spellweaver Equipment, which increases Effect Probability, is recommended.
Roles and Recommended Equipment
Recommended Pets
| Recommended | Alternative (Legendary) | Alternative (Rare) |
|---|---|---|
 Windy |  Eirin |  Sherry |
Since the opponent is a boss, the most recommended pet is Windy. If you don't have Windy or haven't raised it, Eirin, who provides a Physical Attack Boost, is a good alternative.
6-Medal Party Example
The above is a party example for aiming for 6 medals. If you reduce the number of medals, your party composition options expand, as you can include a healer (since Unable to Recover is removed) or a magic attacker (since Magical Attack Reduction is removed).
Tower of Trial Season 9 Related Articles
| Tower of Trials Season 9 Floors | |||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
| 20F | 18F | 16F | 14F | ||||||||
| 12F | 10F | 8F | 6F | ||||||||
| 4F | 2F | Odd Floors | | ||||||||
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