Do you... believe in happiness? She rides around on a frog friend named Eru. The flower Ui holds is a black lily, which fits her concept of love and curses. In contrast, the flower Eru holds is a Sandersonia, which symbolizes success and good fortune despite her dark theme. She wears clothes designed with a thoroughly gloomy, devastated aesthetic. Speech examples: Shall we follow the dark red butterflies until we turn to ash? Will I ever be able to feel the emotion called happiness again? Don't pet me. Do you want to be stained too? ...Did you think this would make me smile? She speaks in such depressing ways.

Niffel is the 'Ghost of Death' who symbolizes the concept of death and rules over the 'Weekend Farm,' the afterlife spoken of by the races of Elias. She is a nihilist completely devoid of bioethics, perhaps because she was born with the power and status of a god of death. While she sounds like she pities and sympathizes with life, it is merely a cold performance; the Hierarch easily saw through her true nature. Even Eldr, who created her, failed to fully control her and grew to regret and fear her creation, eventually isolating her by turning the wasteland outside Elias into a sub-dimension called the Weekend Farm. While she possesses the typical ghost-like tendency to seek 'fun,' the nature of the fun she pursues is deeply twisted, befitting a ghost who presides over death. She finds amusement in seeing others enraged. Speech examples: Not bad? Try doing more. Seven people. I'm taking them all. Permission to take them has already been granted, in a way. When I took that... fraud who calls herself the 'Spirit of the Drizzle'... the World Tree did nothing. Things are certainly different than before. It seems she's grown tired of her toys. Well, having discarded them once by her own hand, the second time will be easy. In reality, this whole persona was just a scripted performance with Eldr.