Haku vs Core 10

**Information**
Light Novel
Web Novel

## Dungeon Battle 8

This Dungeon Battle was launched by Haku. She used her entire faction to start dungeon battles against Dungeon Core Number 10's main dungeon and his branch dungeons.

## Goal

Haku:

1. To destroy Core 10's main dungeon and branch dungeons.
2. Destroying Core 10's dungeon core.

Dungeon Core Number 10:

1. To survive the attack.
2. Take over Haku's body.

## Losing Condition

Haku:

1. Allowing Core 10 to escape via a branch dungeon.

Dungeon Core Number 10:

1. Not surviving the dungeon battle.

## Light Novel

### Background

Keima discovered during his investigation of the Holy Kingdom that the pope of the Church of Light was Dungeon Core Number 10. He informed Haku who gathered her faction, excluding the Cave of Greed, to crush Core 10's dungeons and destroy his dungeon core.

The battles took half a month to finish.

### Notable Tactics

Haku:

1. Using her faction to declare war on Core 10's main dungeon while her faction declared war on the branch dungeons.

Mikan:

1. Using squirrels to map out Core 10's main dungeon quickly

Dungeon Core Number 10:

1. Using the bodies to former saints and saint candidates as undead monsters resistant to holy damage.
2. Resurrecting fallen enemies as reinforcements for defense.
3. Using possession to take control of Haku's body before his dungeon core was destroyed.

### Winner

Haku was able to destroy the Core 10's core and win the battle, but Core 10 was able to possess Haku and take over her body before he was destroyed.

## Web Novel

### Background

After meeting the God of Light using the Divine Comforter Keima found out that the pope of the Holy Kingdom was Dungeon Core Number 10. Keima also found out that Core 10 was attempting to replace Father as the new God of Darkness. He informed Haku who gathered her faction, including Keima using the Ivory Beach Dungeon, to crush Core 10's dungeons and destroy his dungeon core.

### Notable Tactics

Haku:

1. Using her faction to declare war on Core 10's main dungeon while her faction declared war on the branch dungeons.
2. Exchanging monsters with other cores in the faction so the faction could communicate. The number of monsters had dummies to obscure the total number of participating cores.
3. Having Father conceal the identities of Haku's faction when they attacked Core 10.
4. At the start of the battle, Haku launched a torrent of holy water from her dungeon gate to secure a front line base for her faction.

Keima:

1. Delegating preparation of the dungeon battle to his dungeon administrators so they can learn to deal with a dungeon battle without him.
2. Letting Niku possess a Kobold from Soto's dungeon and fight in the battle.
3. Giving Mikan 100,000 DP so he can use squirrels to scout the dungeon on the day of the battle.
4. Constructed with Rei's help, G-Tester Golem. A giant combining robot.

Dungeon Core Number 10:

1. Identifying members of Haku's faction and leaking their information.
2. Declare war on the Cave of Greed using his faction of undead cores in the simultaneous dungeon battle Core 10 vs Cave of Greed.

### Winner

Haku's faction. Keima was able to use the Alarm Clock to break Core 10's possession of Haku after the dungeon battle.

## Trivia

1. This dungeon battle takes place in both the Light Novel and the Web Novel, however, the sequence of events, participants, and even the results of the dungeon battle are different.
2. Haku's faction seems to conduct battles of this scale on traitors every ten years or so. But never on a core as high as Core 10
3. Core 219 was introduced in Volume 7 of the Light Novel. She never appeared in the Web Novel until this battle.
4. Leona's involvement in crushing Core 10's derivative dungeons behind the scenes was not described in the Raid Dungeon Battle Arc, however, it was revealed by Leona and confirmed by Haku in the Bridegroom Training Arc.

## References

1. ↑ Chapter 534
2. ↑ Chapter 554