Hakuji is the earth hashira. He was dating the ice pillar, Douma but he still had feelings for his deceased fiancé, Koyuki. Douma had no idea about Hakuji's feelings towards his deceased fiancé.

All the hashiras were transferred to the infinity fortress, the dimension of the demons to fight the demon king, Kagaya Ubuyashiki. Hakuji was fighting Upper moon 3, on the verge of death. He recalled a memory of him being affectionate with Douma, asking what he would do if he was dead and Douma responded with he would die to be with him. Eventually, Hakuji barely clung to life and fell over, eyes shutting.

The Kasugi crow announced the earth pillar, Hakuji's death. Douma was upset and went to fight Upper moon 2. After, he died and came to see Hakuji in heaven. When he came up, He saw Hakuji hugging his fiancé, Koyuki after so long. He didn't know what to say.

Hakuji didn't think that Douma would die for him after he passed away so he didn't see him behind himself and Koyuki who was smiling in her fiancé's arms at last again. "..."