| Type | Icon | Name | SP | Required | Description |
|---|---|---|---|---|---|
| A | 
|
Def/Res Bond 1 | 60 | — | If unit is adjacent to an ally, grants Def/Res+3 during combat. |
 | Def/Res Bond 2 | 120 | Def/Res Bond 1 | If unit is adjacent to an ally, grants Def/Res+4 during combat. | |
 | Def/Res Bond 3 | 240 | Def/Res Bond 2 | If unit is adjacent to an ally, grants Def/Res+5 during combat. | |
 | Def/Res Bond 4 | 300 | Def/Res Bond 3 | If unit is adjacent to an ally, grants Def/Res+7 to unit and neutralizes unit's penalties to Def/Res during combat. | |
| No restrictions. | |||||
Available as a Sacred Seal.
Notes
- The stat boost that can be applied during combat by Def/Res Bond is considered a temporary buff.
- Def/Res Bond 4 can neutralize
Penalties during combat.
- Penalties are neutralized by granting temporary buffs of the same amount during combat.
- Temporary buffs from Def/Res Bond 4 do not stack with temporary buffs from effects such as
Grand Strategy and 
Atk/Spd Unity, only temporary buffs from Def/Res Bond 4 will apply.
List of owners
| Unit | Skill chain | |||
|---|---|---|---|---|
 | Def/Res Bond 1 4  SR | Def/Res Bond 2 4 SR | Def/Res Bond 3 4 SR | Def/Res Bond 4 5  |
 | Def/Res Bond 1 4 SR | Def/Res Bond 2 4 SR | Def/Res Bond 3 5 | – |
 | Def/Res Bond 1 4 SR | Def/Res Bond 2 4 SR | Def/Res Bond 3 4 SR | – |
 | Def/Res Bond 1 5 | Def/Res Bond 2 5 | Def/Res Bond 3 5 | Def/Res Aria 5 |
 | Def/Res Bond 1 4  | Def/Res Bond 2 4 | Def/Res Bond 3 5 | – |
 | Def/Res Bond 1 5 | Def/Res Bond 2 5 | Def/Res Bond 3 5 | Def/Res Unity 5 |
Availability
Summoning events
| Start | End | Event | Skill |
|---|---|---|---|
| 2018-12-18 | 2019-01-18 | Gifts of Winter | Def/Res Bond 3 |
| 2019-02-09 | 2019-02-16 | Special Hero Summon (Year 2) | Def/Res Bond 3 |
| 2019-04-27 | 2019-05-07 | Legendary Heroes - Alm | Def/Res Bond 3 |
| 2019-10-21 | 2019-11-07 | New Heroes: Zofia's Call | Def/Res Bond 3 |
| 2019-12-24 | 2020-01-24 | Gifts of Winter | Def/Res Bond 3 |
| 2020-04-14 | 2020-04-28 | Focus: Double Special Heroes | Def/Res Bond 3 |
| 2020-06-01 | 2020-06-09 | Focus: Heroes with Bond Skills | Def/Res Bond 3 |
| 2020-08-11 | 2020-08-19 | Focus: Forsyth & Python's Battle | Def/Res Bond 3 |
| 2020-11-03 | 2020-11-11 | Focus: Heroes with Bonfire | Def/Res Bond 3 |
| 2020-11-16 | 2020-11-17 | Focus: Heroes with Bond Skills | Def/Res Bond 3 |
| 2020-12-25 | 2021-01-08 | Gifts of Winter | Def/Res Bond 3 |
| 2021-06-17 | 2021-06-18 | Focus: Heroes with Bonfire | Def/Res Bond 3 |
| 2021-10-19 | 2021-10-20 | Focus: Heroes with Bond Skills | Def/Res Bond 3 |
| 2021-12-21 | 2022-01-04 | Gifts of Winter | Def/Res Bond 3 |
| 2022-02-17 | 2022-02-24 | Focus: Heroes w/Joint Hone Skills | Def/Res Bond 3 |
| 2022-03-18 | 2022-04-07 | New Heroes & Ascended Mareeta | Def/Res Bond 4 |
| 2022-05-31 | 2022-06-14 | Legendary Heroes - Myrrh | Def/Res Bond 3 |
| 2022-06-30 | 2022-07-14 | Legendary Heroes - Xander | Def/Res Bond 4 |
| 2022-08-31 | 2022-09-14 | Legendary Heroes - Deirdre | Def/Res Bond 3 |
| 2022-09-20 | 2022-09-27 | Focus: Heroes with Bond Skills | Def/Res Bond 4 |
| 2022-09-25 | 2022-10-02 | Focus: Weekly Revival 58 | Def/Res Bond 3 |
| 2022-10-28 | 2022-11-08 | Focus: Loyalty League 1 | Def/Res Bond 4 |
| 2022-12-23 | 2023-01-10 | Legendary Heroes - Shez | Def/Res Bond 3 |
| 2022-12-28 | 2023-01-07 | Gifts of Winter (4★SHSR) | Def/Res Bond 3 |
| 2023-02-25 | 2023-03-03 | Focus: Leif & August's Battle | Def/Res Bond 4 |
| 2023-03-09 | 2023-03-21 | Focus: New Power | Def/Res Bond 3 |
| 2023-05-28 | 2023-06-04 | Focus: Weekly Revival 58 | Def/Res Bond 3 |
| 2023-05-31 | 2023-06-14 | Legendary Heroes - Hinoka | Def/Res Bond 3 |
| 2023-08-09 | 2023-08-12 | Revival: Ascended Mareeta | Def/Res Bond 4 |
| 2023-12-27 | 2024-01-06 | Gifts of Winter (4★SHSR) | Def/Res Bond 3 |
| 2024-01-28 | 2024-02-04 | Focus: Weekly Revival 58 | Def/Res Bond 3 |
| 2024-02-29 | 2024-03-14 | Legendary Heroes - Alear | Def/Res Bond 3 |
| 2024-08-03 | 2024-08-07 | Focus: Heroes with Bond Skills | Def/Res Bond 4 |
| 2024-08-18 | 2024-08-25 | Focus: Weekly Revival 58 | Def/Res Bond 3 |
| 2024-11-29 | 2024-12-16 | Focus: Double Mythic Heroes | Def/Res Bond 3 |
| 2024-12-18 | 2025-01-08 | Focus: Hall of Forms | Def/Res Bond 3 |
| 2024-12-20 | 2024-12-30 | Gifts of Winter (4★SHSR) | Def/Res Bond 3 |
| 2025-02-16 | 2025-02-23 | Focus: Weekly Revival 58 | Def/Res Bond 3 |
| 2025-04-20 | 2025-04-27 | Focus: Weekly Revival 103 | Def/Res Bond 4 |
| 2025-04-24 | 2025-04-25 | 35th Anniversary: Daily Revival 58 | Def/Res Bond 3 |
| 2025-05-04 | 2025-05-05 | 35th Anniversary: Daily Revival 103 | Def/Res Bond 4 |
| 2025-05-12 | 2025-05-26 | Legendary & Mythic Hero Remix 2 | Def/Res Bond 3 |
| 2025-09-14 | 2025-09-21 | Focus: Weekly Revival 103 | Def/Res Bond 4 |
| 2025-12-15 | 2026-01-15 | Gift I'll Give Again | Def/Res Bond 3 |
| 2025-12-28 | 2026-01-04 | Focus: Weekly Revival 103 | Def/Res Bond 4 |
| 2025-12-29 | 2026-01-08 | Gifts of Winter (4★SHSR) | Def/Res Bond 3 |
| 2026-02-02 | 2026-03-06 | Special Hero Summon (Year 9) | Def/Res Bond 3 |
| 2026-02-11 | 2026-02-20 | 9th Anniv. "12 Luminaries" 2 | Def/Res Bond 3 |
| 2026-02-15 | 2026-02-19 | Gifts of Winter (4★SHSR) | Def/Res Bond 3 |
| 2026-03-09 | 2026-03-23 | Legendary & Mythic Hero Remix 2 | Def/Res Bond 3 |
| 2026-04-05 | 2026-04-12 | Focus: Weekly Revival 58 | Def/Res Bond 3 |
| 2026-04-21 | 2026-05-05 | Focus: Double Special Heroes | Def/Res Bond 3 |
Distributed units
Combat Manuals
| Start | End | Hero | Currency |
|---|---|---|---|
| 2020-11-05T03:00:00Z | 2020-12-28T06:59:59Z | Fae: Holiday Dear | Divine Code: Ephemera 11 |
| 2023-03-06T03:00:00Z | August: Astute Tactician | Divine Code: Part 4 |
Seal acquired from
Tempest Trials reward
- Tempest Trials+: Till Song's End ( – ): 20,000 Score.
Sacred Seal Forge
Def/Res Bond 1: Create for 20 
Great Transparent Badge, 100 
Transparent Badge, 40 
Sacred Coin.
Def/Res Bond 2: Enhance for 60 Great Transparent Badge, 100 Transparent Badge, 50 Sacred Coin.
Def/Res Bond 3: Enhance for 400 Great Transparent Badge, 1000 Transparent Badge, 100 Sacred Coin.
In other languages
| Language | Name |
|---|---|
| English (US) | Def/Res Bond |
| Japanese | 守備魔防の絆 |
| German | Ver./Res.-Band |
| Spanish (Europe) | Lazo Def/Res |
| Spanish (Latin America) | Lazo Def./Res. |
| French | Lien Déf/Rés |
| Italian | Vincolo Dif/Res |
| Traditional Chinese (Taiwan) | 防守魔防的羈絆 |
| Portuguese | Laço Def./Res. |