| Type | Icon | Name | SP | Required | Description |
|---|---|---|---|---|---|
| A | 
|
Blade Session 1 | 60 | — | If unit initiates combat, grants bonus to unit's Atk/Spd during combat = 1 + number of allies who have already acted (max value of 3). |
 | Blade Session 2 | 120 | Blade Session 1 | If unit initiates combat, grants bonus to unit's Atk/Spd during combat = 2 + number of allies who have already acted × 2 (max value of 6). | |
 | Blade Session 3 | 240 | Blade Session 2 | If unit initiates combat, grants bonus to unit's Atk/Spd during combat = 3 + number of allies who have already acted × 3 (max value of 9). | |
| No restrictions. | |||||
Available as a Sacred Seal.
Effects
| Effects | Targets | Conditions |
|---|---|---|
| Combat effects | ||
 Atk/Spd+X (max: 9)X = 3 x  Allies whoalready acted, +3 |  Unit | Player Phase |
Notes
- "If unit initiates combat" means if the user starts combat during the player phase. The unit does not need to deal damage, nor be the first to attack.
- However, if the effect is applied after combat, the unit must also survive it to fulfill this condition.
- The stat boost that can be applied during combat by Blade Session is considered a temporary buff.
List of owners
| Unit | Skill chain | ||
|---|---|---|---|
 | Blade Session 1 4  | Blade Session 2 4 | Blade Session 3 5  |
 | Blade Session 1 4  SR | Blade Session 2 4 SR | Blade Session 3 5 |
Availability
Summoning events
| Start | End | Event | Skill |
|---|---|---|---|
| 2020-01-20 | 2020-02-07 | New Heroes: A Star Is Born | Blade Session 3 |
| 2020-04-08 | 2020-05-01 | Free 5★ Hero: Fire Emblem Leads | Blade Session 3 |
| 2020-04-30 | 2020-05-07 | Legendary Heroes - Edelgard | Blade Session 3 |
| 2020-07-16 | 2020-07-25 | Focus: Heroes with Moonbow | Blade Session 3 |
| 2020-12-21 | 2020-12-28 | Focus: Heroes with Chill Skills | Blade Session 3 |
| 2021-05-13 | 2021-05-20 | Legendary Hero Remix | Blade Session 3 |
| 2021-10-22 | 2021-10-23 | Focus: Heroes with Moonbow | Blade Session 3 |
| 2021-10-29 | 2021-10-30 | Focus: Heroes with Chill Skills | Blade Session 3 |
| 2021-11-27 | 2021-12-07 | Focus: Sound Tactics 1 | Blade Session 3 |
| 2022-08-28 | 2022-09-04 | Focus: Weekly Revival 56 | Blade Session 3 |
| 2022-10-09 | 2022-10-23 | Focus: Hall of Forms Revival | Blade Session 3 |
| 2022-12-18 | 2022-12-25 | Focus: Weekly Revival 64 | Blade Session 3 |
| 2023-04-30 | 2023-05-07 | Focus: Weekly Revival 56 | Blade Session 3 |
| 2023-06-19 | 2023-08-07 | Summer Longing | Blade Session 3 |
| 2023-07-16 | 2023-07-23 | Focus: Weekly Revival 64 | Blade Session 3 |
| 2023-10-07 | 2023-10-18 | Focus: New Power | Blade Session 3 |
| 2024-01-14 | 2024-01-21 | Focus: Weekly Revival 56 | Blade Session 3 |
| 2024-01-30 | 2024-03-05 | Special Hero Summon (Year 7) | Blade Session 3 |
| 2024-02-05 | 2024-02-15 | 7th Anniversary Special Focus 1 | Blade Session 3 |
| 2024-03-10 | 2024-03-17 | Focus: Weekly Revival 64 | Blade Session 3 |
| 2024-03-25 | 2024-04-08 | Focus: Double Special Heroes | Blade Session 3 |
| 2024-06-19 | 2024-06-29 | Summer Longing | Blade Session 3 |
| 2024-08-04 | 2024-08-11 | Focus: Weekly Revival 56 | Blade Session 3 |
| 2024-09-29 | 2024-10-06 | Focus: Weekly Revival 64 | Blade Session 3 |
| 2025-02-02 | 2025-02-09 | Focus: Weekly Revival 56 | Blade Session 3 |
| 2025-03-30 | 2025-04-06 | Focus: Weekly Revival 64 | Blade Session 3 |
| 2025-04-24 | 2025-04-25 | 35th Anniversary: Daily Revival 56 | Blade Session 3 |
| 2025-04-25 | 2025-04-26 | 35th Anniversary: Daily Revival 64 | Blade Session 3 |
| 2025-06-20 | 2025-06-30 | Summer Longing | Blade Session 3 |
| 2026-03-22 | 2026-03-29 | Focus: Weekly Revival 56 | Blade Session 3 |
| 2026-05-17 | 2026-05-24 | Focus: Weekly Revival 64 | Blade Session 3 |
Distributed units
- This skill is not available on any distributed units.
Combat Manuals
- This skill has not been available on any distributed Combat Manuals.
Seal acquired from
Tempest Trials reward
- Tempest Trials+: Engagement ( – ): 20,000 Score.
Sacred Seal Forge
Blade Session 1: Create for 20 
Great Scarlet Badge, 100 
Scarlet Badge, 40 
Sacred Coin.
Blade Session 2: Enhance for 60 Great Scarlet Badge, 200 Scarlet Badge, 50 Sacred Coin.
Blade Session 3: Enhance for 400 Great Scarlet Badge, 1000 Scarlet Badge, 100 Sacred Coin.
In other languages
| Language | Name |
|---|---|
| Japanese | 刃のセッション |
| German | Klingen-Session |
| Spanish (Europe) | Session espada |
| Spanish (Latin America) | Session espada |
| French | Session lame |
| Italian | Lama Session |
| Traditional Chinese (Taiwan) | 刃之協奏 |
| Portuguese | Espada Session |