This is Eirin Rating & Effect Guide in Seven Knights Re:birth. It covers Eirin's evaluation, enhancement effects, skills, and alternative pets. Use this page when looking up Eirin.
Table of Contents
Eirin's Rating and Enhancement Effects

| Role | Damage Buff |
|---|---|
| Abilities | Physical Attack Boost (Always Active) |
| Related Heroes | Eileene |
| Rarity | Legendary |
| Type | Special Pets - Seven Knights |
| How to Obtain | Pet Summon / Pet Fusion / Pet Rank Up |
Eirin's Evaluation
| Overall Rating | Quick Evaluation |
|---|---|
| PvP PvE ![]() | - One of the special pets for Seven Knights. - Can greatly increase the Physical Attack of the party. - Recommended for Physical Attack parties. |
User Score
Eirin's Enhancement Effects
| Rank | Attack | Defense | HP |
|---|---|---|---|
Eirin 6★ | 564 | 344 | 1895 |
Eirin★5 | 391 | 237 | 1307 |
Eirin★4 | 301 | 180 | 1004 |
Rare★6 | 371 | 226 | 1246 |
Rare★5 | 257 | 154 | 853 |
Rare★4 | 195 | 116 | 653 |
※These values are based on the max level in the Codex and +5 Enhancement. Pets of the same rarity (Legendary/Rare) share the same enhancement effects.
Eirin's Skills
Pet's Heart
Physical Attack Boost (Always Active)
6★:Increases Physical Attack by 21%.
5★:Increases Physical Attack by 19%.
4★:Increases Physical Attack by 17%.
Eirin's Alternative Pets
Sherry

Sherry is a pet that boosts Physical Attack just like Eirin. It's a Rare pet obtainable through Pet Crafting and relatively easy to raise, making it useful as a stopgap until you secure Eirin, or when you need two Physical teams for content like Guild War or Advent Expedition.
★6 Sherry Has the Same Buff Amount as ★4 Eirin
Sherry's buff amount at ★6 (17%) is equal to Eirin's at ★4. At this point, Sherry has more stats applied from the enhancement effect, so check your training progress and field whichever has the higher stats.
Alternative Pet Performance Comparison
| Type | Skill Effect |
|---|---|
Eirin | 6★:Increases Physical Attack by 21%. 5★:Increases Physical Attack by 19%. 4★:Increases Physical Attack by 17%. |
Sherry | 6★:Increases Physical Attack by 17%. 5★:Increases Physical Attack by 15%. 4★:Increases Physical Attack by 13%. |
Windy | 6★:Boss Vulnerability (26%) Increases All Attack by 12%. 5★:Boss Vulnerability (20%) Increases All Attack by 10%. 4★:Boss Vulnerability (15%) Increases All Attack by 8%. |
Richel | 6★:Increases Weakness Hit Chance by 17%. Increases Weakness Hit Damage by 10%. 5★:Increases Weakness Hit Chance by 13%. Increases Weakness Hit Damage by 8%. 4★:Increases Weakness Hit Chance by 10%. Increases Weakness Hit Damage by 6%. |
Kree | 6★:Increases Effect Hit Rate by 19%. Increases All Attack by 12%. 5★:Increases Effect Hit Rate by 16%. Increases All Attack by 10%. 4★:Increases Effect Hit Rate by 13%. Increases All Attack by 8%. |
Dello | 6★:Increases Crit Rate by 21%. Increases Crit Damage by 15%. 5★:Increases Crit Rate by 19%. Increases Crit Damage by 13%. 4★:Increases Crit Rate by 17%. Increases Crit Damage by 10%. |
Yu | 6★:Decreases Defense by 10%. Decreases Incoming Healing by 32%. 5★:Decreases Defense by 8%. Decreases Incoming Healing by 28%. 4★:Decreases Defense by 6%. Decreases Incoming Healing by 24%. |
Jeo | 6★:Increases Damage by 12%. Increases All Attack by 29%. 5★:Increases Damage by 10%. Increases All Attack by 25%. 4★:Increases Damage by 8%. Increases All Attack by 21%. |
Yorang | 6★:Increases Damage from 4-5 Target Attack Skills by 17%. Decreases Weakness Hit Chance by 31%. 5★:Increases Damage from 4-5 Target Attack Skills by 14%. Decreases Weakness Hit Chance by 21%. 4★:Increases Damage from 4-5 Target Attack Skills by 11%. Decreases Weakness Hit Chance by 17%. |
Nezuko Kamado | 6★:Increases All Attack by 9%. Increases Defense by 13%. Increases Max HP by 13%. 5★:Increases All Attack by 7%. Increases Defense by 11%. Increases Max HP by 11%. 4★:Increases All Attack by 6%. Increases Defense by 8%. Increases Max HP by 9%. |
Croa | 6★:Increases All Attack by 12%. 5★:Increases All Attack by 10%. 4★:Increases All Attack by 8%. |
Nina | 6★:Increases Crit Rate by 17%. 5★:Increases Crit Rate by 15%. 4★:Increases Crit Rate by 13%. |
Little Feng | 6★:Increases Crit Damage by 25%. 5★:Increases Crit Damage by 22%. 4★:Increases Crit Damage by 19%. |
Mewmew | 6★:Increases Damage by 10%. 5★:Increases Damage by 8%. 4★:Increases Damage by 6%. |
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