|Relationship Status||In a relationship|
Souseiseki (Lapislazuli Stone / Blue Star Stone) is a character from the series Rozen Maiden. She is the fourth doll of the Rozen Maiden series. She is the younger twin sister of Suiseiseki.
- She cares about Suiseiseki's safety, by returning her Rosa Mystica (the dolls life source).
- She touches Suiseiseki's face after she fell asleep.
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