Haku

Information
Haku or Dungeon Core Number 89 has one of the biggest dungeons in the entire world. Her dungeon has evolved to envelop an entire city. She is the wife of the late Lyon Laverio, his Dungeon Master. She is actually the Goddess of Adventurers.

Appearance
Haku is exceptionally beautiful, she has white long hair and a pair of red eyes. As Rokuko she has 2 forms as well, but mostly seen in her adult form

Personality
She is known to dote on Rokuko as a little sister, and cares deeply for her well-being, going so far as to give Rokuko detrimental advice so that she might escape attention.

Volume 1

 * Chloe
 * Amelia
 * Sally
 * Dolce
 * Misha

Volume 5

 * Post

Volume 1
While Keima was out the dungeon, she and her butler, Chloe visited Rokuko. After Keima came back she suggested a Dungeon Battle. During the Battle, she was taught a lot by Keima's unusual tactics, so she lost.

Volume 2
After Rokuko's dungeon got its new name, Cave of Greed, she went to visit the already built Dancing Doll Inn. She informed them about Ittetsu and the Flame Caverns

Volume 3
She told Keima not to kill her Hero, Wataru. Before Wataru left the inn and the dungeon, he gave Rokuko 2 letters, which contained the kill order of the Soldier of God, Dragon Suzuki. After Suzuki was imprisoned in the dungeon wall, she came and took a Doppelgänger back into custody.