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Season 9 Tower of Trials for Seven Knights Re:Birth. The guide is for clearing the 8th Floor (Rosie). It includes tips, enemy info, and the best team for obtaining all 6 medals.
Table of Contents
Season 9 Tower of Trial 8th Floor: Rosie
Enemy Information
| Period | Until 21:00 (UTC+0), March 18, 2026 |
| Floor | 8F |
| Enemy Team |   |
| Speed | 160 |
| Turn Limit | 200 turns |
| Key Features | ■Rosie (Center) - Gains Damage Immunity for 3 turns when HP is 50% or less - When an ally is incapacitated, her Cooldown is reduced and Damage Dealt is increased - Inflicts Death - Revives all allies - Reduces buff duration - Reduces Effect Resistance ■Charles - Inflicts Bleed |
Additional Rules
| Medals | Additional Rule/Details |
| -1 | [Ally] Death Immunity [Always Active] Blocks Death effects. |
| -1 | [Ally] Crit Damage Boost [Always Active] Increases Crit Damage by 67%. |
| +1 | [Enemy] Debuff Immunity [Always Active] Blocks all debuff effects. |
| +1 | [Enemy] When an ally Revives, gain 1 stack of Damage Resistance [Max 20 stacks] Damage Taken is reduced by 4%. |
| +1 | [Enemy] When [Rosie] uses Skill 1, gain Damage Immunity [Lasts 2 turns] [Always Active] Adds Damage Immunity [Lasts 2 turns] to [Judgment of Moonlight]. |
Team Composition & Strategy Tips
- Aim for Rosie with Weakness Hits
- Focus Target is not possible due to Debuff Immunity - Use an attacker on the first turn to reduce her HP
- Pascal is recommended - You also need to counter Death
- Elysia is recommended - Remove Damage Immunity with buff duration reduction
- Handle it with Elysia or Miho - It's also possible to overpower her with high damage
- Such as with Melia or Xiao Qiao
Aim for Rosie with Weakness Hits
If you defeat anyone other than Rosie, her Damage Dealt will increase, and she will use her reduced cooldown to revive everyone, so focus your attacks on her. It's recommended to increase your Weakness Hit Chance with Rachel or Biscuit.
 Point! | Due to the Debuff Immunity rule, you can't apply Focus Target with Asura, so you need to attack with Weakness Hits. |
|---|
Use an Attacker on the First Turn to Reduce her HP
To land a Weakness Hit on Rosie, you should reduce her HP with an attacker on the first turn. Either Physical or Magic attackers are fine, but Pascal, who deals heavy single-hit damage, is especially recommended.
Make sure your Speed is over 160
To reduce Rosie's HP before Charles can be revived, you need to take the first turn. Equip gear so that your party's Speed exceeds the enemy's 160.
Counter Death
Rosie inflicts Death, so counter it with a Hero that has Death Immunity or a Debuff Removal Hero like Elysia. If the Cooldown Reduction from defeating allies other than Rosie isn't significant, the frequency of Death isn't high, so Elysia can handle it well enough.
Remove Damage Immunity with Buff Duration Reduction
Rosie gains Damage Immunity when her HP is below 50% or when she uses her Skill 1, so remove it with the buff duration reduction from Elysia or Miho. Using Elysia to both remove Death and reduce buff duration at the same time will lead to a shorter clear time.
Overpower her with High Damage
If your attacker's damage is high enough, you can boost it further with heroes like Melia or Xiao Qiao to overpower her. In this case, you'll finish her off with two uses of Pascal's Top Skill before Death is inflicted twice, so you won't need Elysia for Death counter or Velika for Cooldown Reduction.
Best Team & Pets
Basic Party Example
Elysia
Velika
Rachel
Miho
PascalThis is a basic party example that uses Rachel to increase Weakness Hit Chance and Pascal to attack. It's even better if you can get everyone's Weakness Hit Chance to 100%, including Rachel's passive.
Roles and Recommended Gear here
High-Damage Party Example
Biscuit
Melia
Xiao QiaoThis is a high-damage party example with 4 support heroes and Pascal. Boost Pascal's damage with Biscuit and Xiao Qiao, remove Damage Immunity with Miho, and finish the fight before Death is inflicted twice.
Roles and Recommended Gear here
Recommended Pets
| Recommended | Alternative (Legendary) | Alternative (Rare) |
|---|---|---|
 Windy |  Yeonji |  Note |
Since Rosie is a boss, the most recommended pet is Windy. If you don't have or haven't raised Windy, Yeonji, who provides a Magic Attack Boost, is recommended.
Party Examples for 6 Medals
The examples above are for aiming for a 6-medal clear. If you reduce the number of medals, you won't need to counter Death, which expands your team-building options, such as adding more attackers or support heroes, or removing the Debuff Immunity rule and using Asura.
Tower of Trial Season 9 Related Links
| Tower of Trials Season 9 Floors | |||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
 20F | 18F | 16F | 14F | ||||||||
| 12F | 10F | 8F | 6F | ||||||||
| 4F | 2F | Odd Floors | | ||||||||
Related Seven Knights Re: BIRTH Articles
▶Back to Top PageRanking Articles
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 Best Hero Tier List |  Reroll Tier List |  Best Pet Tier List |
How To Reroll Fast?
Leveling & Ruby Farming Guide
Latest News & Updates
Daily Things to Do
Best Heroes and Teams
Advent Expedition Guide
Best Premium Shop Purchases
Best Low Rarity Heroes
Best Accessory
Real Time Arena Guide
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Tower of Trials 2F Jave Season 9 Guide
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Guan Yu - Features and Release Date
Tower of Trials 4F Rook Season 9 Guide
Tower of Trials Odd Floors Season 9 Guide
Tower of Trials 6F Sera Season 9 Guide
Tower of Trials 12F Fai Season 9 Guide
Early Game Guide
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Fodder Hero Guide
Tower of Trials Guide
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Recommended Relay Purchases Guide
Weakness Hit Guide & What is It?
How to Use the Web Shop
Error Guide and How to Fix
Guild War Guide
Xiao Release Date and Features
Should You Pull for Trude?
Radgrid Release Date and Features
Bai Long Release Date and Features
Castle Rush Guide
Guardian's Castle Guide
Fodina Castle Guide
Immortal Castle Guide
Death Castle Guide
Ancient Dragon's Castle
Blizzard Castle Guide
Hell Castle Guide
Destroyer Gaze Guide
Ox King Guide
Iron Devourer
Raid Battle Guide
How to Beat Teo
How to Beat Kyle
How to Beat Yeonhee
How to Beat Karma
How to Beat God of Destruciton
Burn Guide
Paralysis Guide
Bleed Guide
Freeze Guide
Stun Guide
Petrify Guide
Shock Guide
Sleep Guide
Concussion Guide
Debuff Types Guide
Confusion Guide
Poison Guide
Death Guide
