Albedo is a character from the light novel series “Overlord” written by Kugane Maruyama and illustrated by so-bin. She is one of the main characters in the series and serves as the Overseer of the Guardians of the Great Tomb of Nazarick. There is no known character named “Albedo’s sister” in the “Overlord” series, nor is there any mention of Albedo having a sibling.
It is possible that the question is referring to another character in the “Overlord” series who has a sister. There are several characters in the series who have siblings, including Shalltear Bloodfallen, who has a younger sister named Nigredo. Nigredo is a character who appears later in the series and is one of the NPCs created by the Supreme Beings who designed the Great Tomb of Nazarick.
Nigredo is described as having long, silver hair that is similar in appearance to Albedo’s hair, and also wears a black dress similar to Albedo’s. However, Nigredo’s personality and abilities are quite different from Albedo’s, as she is more introverted and has the ability to manipulate people’s emotions.
It’s important to note that the “Overlord” series is constantly evolving and new characters are introduced throughout the story, so it’s possible that a character named “Albedo’s sister” could be introduced at a later point in the series. However, as of the current publication of the series, there is no known character by that name.
In conclusion, there is no known character named “Albedo’s sister” in the “Overlord” series. The series does feature several characters who have siblings, including Shalltear Bloodfallen, who has a younger sister named Nigredo. However, Nigredo’s personality and abilities are quite different from Albedo’s, despite the similarity in their appearances. As the “Overlord” series is ongoing and constantly evolving, it’s possible that new characters could be introduced in the future, but as of now, there is no known character that fits the description of “Albedo’s sister.”