This page highlights the differences between Dayu Usukawa/Usuyuki and Dayu/Dalia.
| In life, she was a woman named Usuyuki, who became a Gedoushu after burning down Shinza, a man she was obsessed with but who never loved her, during his wedding, and killing everyone at the party.
|| In life, she was a woman named Dahlia, who was married to Deker. She was transformed into Nighlok after making a deal with Serrator to save Deker's life.
| Shamisen's origin is Shinza's soul.
|| Harmonium's origin is a guitar, a wedding gift from Deker.
|Held respect for Juzo but never showed any aspects of love.
||Bound by her love for Deker both in life and in the afterlife.
|Abandons Dokoku but returns to him due to realizing her only purpose was to ease him.
||Abandons Xandred but returns to him due to Serrator merely using her.
|After being killed by Mako, she dies happy she was able to revive Doukoku.
||After being killed by Mia, she dies happy to return to Deker disacknowledging any connection she held with Xandred.