An Si-eun

An Si-eun (安施恩 (アンシウン)), known in-game as Sieunee (シウネー), is a player of «ALfheim Online». She was the sub-leader of the «Sleeping Knights» guild. As she is an Undine healer like Asuna, her role is to support the other fighters with magic.

ALfheim Online Avatar
An Si-eun's avatar has long light blue hair which is almost pure white, one of the most defining feature of Undine players. She also had calm deep blue eyes shining radiantly beneath her drooping eyelashes, a long nose, lustrous lips and surprisingly slender, all of which give off the feeling of an excellent Undine healer.

In town, she wears light, blue ordinary clothes, but in battle, she wears an Ancient-level, cleric-styled, white and navy-blue robe, a hat which poofs out like a cake and carries a thin silver staff in her right hand.

Backgound
As with the other members of the Sleeping Knights, An Si-eun was diving into virtual worlds to improve her life quality since she was diagnosed with acute lymphoblastic leukemia. She was treated with chemotherapy and became better, but after a year she was sick again. Because she wasn't compatible for a bone marrow transplant, she was just treated as a terminally ill patient.

Mother's Rosario
An Si-eun is first introduced in an inn on the 27th Floor of Aincrad as a member of the Sleeping Knights guild. She acts as a support player to her party during battles, not only healing, but also casting buffs over them. With Asuna's help, they manage to defeat the floor's boss. After the guild disbands, she's the only one who faces Asuna and asks her not to look for them. After Asuna meets Yuuki at the hospital, she returns, along the other members to ALO and clear the 28th and 29th Floors. During April in the year 2026, her leukemia disappears and she was discharged a week prior to Yuuki's funeral. After the funeral, she talks to Asuna and explains everything she passed.

Trivia

 * An Si-eun/Sieunee, originally An Shi En/Shiien in the web novel, is actually a Korean name. However, the name was changed in the light novel, because, when Reki was working on the paperback version of his novel, he consulted a Japanese-Korean translator on whether the name he had used in the web novel actually existed. He found out that, although Shiien did not exist, Si-eun was a rather popular name.