Ranked ninth among the fragments, Nian is an enigmatic entity of metallurgy. While many siblings scheme, she prefers acting carefree, slacking off, or making chili hot pots on the Rhodes Island landship. However, beneath her rebellious exterior lies a deep mission to unite her siblings and eradicate Sui's true, chaotic form.

An ink wash painter and the eleventh sibling. Tormented by the fear of her consciousness merging back into Sui's hivemind, she avoids sleep and reality by living inside her own canvases. Her artistic domain is "Will," allowing her to trap others and shape sentient, nonsensical pocket realities with her brush.

The third eldest sister. A brilliant military strategist who guarded Yumen's borders, she is now a heavy drinker and poet. She manifests her reality-bending powers—dubbed "Unfettered"—through dreams and poetry. Ling deeply cares for her younger sisters, often ensuring their antics don't threaten the empire of Yan.

The oldest sibling. A former martial arts instructor for Yumen who resigned due to fatigue with eternal conflicts. He embodies "warfare" and military philosophy, relying on his blazing, iron fists to maintain peace. Chongyue actively seeks Anatta—the lack of a permanent self—pursuing true humanity and inner peace.

The sixth sibling. She has spent a thousand years quietly suppressing dark, demonic corruption beneath the soil. Representing agriculture, she returned to the mortal world as a loving, protective presence who finds genuine joy in human life. Her overbearing affection often leads other siblings to scramble away when she visits.

The twelfth and youngest agent of Sui. Having stayed in the Sui Mausoleum the longest, he spent centuries observing human behavior before stepping out. The youngest brother embodies the culinary arts and runs Yuwei Restaurant. He remains fiercely loyal to his family, dedicating himself to nourishing his siblings.

Si is an artificial Feranmut proxy in *Arknights: Endfield*, created by Nian, Dusk, and Shu to preserve a stable divine presence. Carrying their combined powers over forge, ink, and vitality, she wanders the alien planet of Talos-II. Si uses scroll barriers and ink constructs to seal threats, standing as a quiet guardian of nature and memory.