Kou and the Hollow Existence
| Event | Story | Gallery |
Kou and the Hollow Existence is a side story.
- Initial Release: October 28, 2019
- Rerun(s): April 14, 2022
- Added to Side Stories: November 14, 2025
- Unlock: Complete Forgiveness and Gratitude
This event is part of the Thousand-Year Successors series. Listed in order of premiere:
One boy's quest to illuminate
a false history nears its end.
But a thousand-year-old tale thought to be
over refuses to go quietly.
He feels dread stirring in his chest;
a darkness is coming for him and
his loved ones.
Two sides of the same coin will meet
through happenstance,
and he will uncover another truth about
the lost royal families.
For new players
- Complete each chapter, quest, and boss; each awards
- Completing Ending awards
- Completing the Hard event battle awards
- Purchase the 20×
- Purchase the 50×
- Purchase the 3×
- Earn trophies for additional
New Character
| You (Event) |  |
 |
 | |
 |
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| Site | RatingThe character's overall rating out of 10. | GrindingThe character's general efficiency in repeatedly clearing menial content with an emphasis on real-time speed. GW Max Grade: SS KG Max Grade: SS |
Full AutoThe character's general performance in Full Auto parties. GW Max Grade: SS KG Max Grade: SS |
High DifficultyThe character's capability relative to the game's most difficult content. GW Max Grade: SS KG Max Grade: SS |
Last Update |
|---|---|---|---|---|---|
 |
8.0 | N/A | N/A | N/A | 2019-11-01 |
 |
7.5 | N/A | N/A | N/A | 2023-06-08 |
You (Event) joins you after clearing the second Epilogue.
Event Battles
Story Battles
| Occurrences | Notes |
|---|---|
| Ch. 1, Ep. 2 | |
| Ch. 2, Ep. 4 | |
| Ch. 3, Ep. 4 | |
| Ch. 6, Ep. 3 | |
| Ch. 6, Ep. 4 | |
| Ch. 7, Ep. 4 |
Solo Battles
Threat of Indigo Flame |
|
|---|---|
| Cost to Host: 10 AP | Unlock: Clear Ending |
| Rewards | ||
|---|---|---|
First clear:   |
||
Every clear:  |
| Wooden | Silver | Gold |
|---|---|---|
|
Empty Vessel on the Loose |
|
|---|---|
| Cost to Host: 20 AP | Unlock: Clear Threat of Indigo Flame |
| Rewards | ||
|---|---|---|
First clear:  |
||
| Every clear: |
| Wooden | Silver | Gold |
|---|---|---|
|
Challenge Battle
Training with a Reformed B.B.
- Buck Bronco's help was instrumental in getting Kou better. Societte offers him a training session as a gesture of thanks.
- Party: Guests
- Completion reward:
- Enemies:
- Difficulty: Trivial
Event Rewards
Event Shop
| Inventory | ||||
|---|---|---|---|---|
| Item | Step | Limit |  |  |
 Sapphire Dance: Habotan | 1 | 1 | 30 | 15 |
| 2 | 1 | 60 | 50 | |
| 3 | 1 | 90 | 75 | |
| 4 | 1 | 120 | 100 | |
 Holy Fox Strings | 1 | 1 | 15 | 5 |
| 2 | 1 | 30 | 20 | |
| 3 | 1 | 50 | 40 | |
| 4 | 1 | 75 | 60 | |
 Cinder Claw | 1 | 1 | 5 | - |
| 2 | 1 | 15 | - | |
| 3 | 1 | 20 | - | |
| 4 | 1 | 25 | - | |
 Cinder Fang | 1 | 1 | 5 | - |
| 2 | 1 | 15 | - | |
| 3 | 1 | 20 | - | |
| 4 | 1 | 25 | - | |
 Premium Draw Ticket | 1 | 1 | 15 | - |
| 2 | 1 | 20 | 5 | |
| 3 | 1 | 30 | 10 | |
 Angel Queen | 1 | 30 | 3 | - |
 Half Elixir | 1 | 20 | - | 2 |
 Soul Berry | 1 | 50 | - | 1 |
 CP ×10 | 1 | 20 | 3 | 1 |
| 2 | 10 | 5 | 2 | |
| 3 | 10 | 8 | 3 | |
 Champion Merit | 1 | 3 | 15 | 5 |
| 2 | 3 | 30 | 10 | |
| 3 | 3 | 50 | 15 | |
 Supreme Merit | 1 | 3 | 50 | 20 |
| 2 | 3 | 100 | 40 | |
 Skill Shard | 1 | 5 | 20 | 3 |
 Skill Jewel | 1 | 3 | 30 | 10 |
Trophies
| English Title | Japanese Title | Step | Description | Reward | Notes | |
|---|---|---|---|---|---|---|
 | Two Sides of the Same Coin | 表裏一体 | ★ | Get 200 hollow existence medallions | |
|
| Hollow No More | 満たされし者 | ★ | Get 100 braised bean curds | |
|
 | Tickles and a Head Pat! | うりうり♪ よしよし♪ | ★☆☆ | Get 100,000 honors in Kou and the Hollow Existence | |
|
| Everyone's Eating Fish Today! | みんなでお魚さんを食べよう！ | ★★☆ | Get 500,000 honors in Kou and the Hollow Existence | |
|
| I Wanna Give a Piggyback Ride! | おんぶしたい！ | ★★★ | Get 1,000,000 honors in Kou and the Hollow Existence | |
|
| Strange Arsonist | 怪異一匹火事の元 | ★ | Complete chapter 3 of Kou and the Hollow Existence | |
|
| I'll Help Fill Your Emptiness | 僕が貴方を満たしてみせる | ★ | Complete chapter 6 of Kou and the Hollow Existence | |
|
| Rookie Firefighter | 火消し見習い | ★☆☆ | Clear Kou and the Hollow Existence special quest 5 times | |
|
| Experienced Firefighter | ファイアファイター | ★★☆ | Clear Kou and the Hollow Existence special quest 50 times | |
|
| Fire Chief of the Sky | 空の消防司令長 | ★★★ | Clear Kou and the Hollow Existence special quest 200 times | |
|
| Everything We Do, We Do It for You | すべては命を守るために | ★ | Defeat Burning Indigo (Nightmare) in Kou and the Hollow Existence special quest | |
|
| How Can I Ever Thank You? | ホントに、ありがとう…… | ★ | Defeat Ninpress (Maniac) in Kou and the Hollow Existence special quest | |
|
| Drink Responsibly | お酒は飲んでも飲まれるな | ★ | Clear the challenge quest Training with a Reformed B.B. | |
History
Voiced Trailer
| Japanese[1] | English |
|---|---|
|
はぁ、許せねぇ、許せねぇ なんであいつばかり報われる なんで、だよぉ なんであいつばかり でも、ようやくだ ようやく、このイライラをぶちまけられる 次回グランブルーファンタジー 「期待しやがれ、あの極悪人をぶち殺す！」 |
Haa, I'll never forgive him, I'll never forgive him. Why is he always getting rewarded? Why?! Why, even though he's the one who's But finally, finally, I'll be able to vent out this frustration. Next up in Granblue Fantasy, I'm going to slaughter that scoundrel for sure! |
Trailer Teaser Text
This text only appears in the voiced trailer pop-up window.
One boy's quest to illuminate
a false history nears its end.
But a thousand-year-old tale thought to be
over refuses to go quietly.
He feels dread stirring in his chest;
a darkness is coming for him and
his loved ones.
Two sides of the same coin will meet
through happenstance,
and he will uncover another truth about
the lost royal families.
Next up in Granblue Fantasy,
Kou and the Hollow Existence
