Godou Kusanagi[]
When they first met, Lucretia commented on how similar Godou was to his grandfather. She later referred to him as a toy for her entertainment, even going as far as to give him the Prometheus' Grimoire just to see if something interesting happened. After Godou became a Campione, Lucretia went about picking on him and seducing him. She calls herself Godou's 'foreign wife.' Whether this was out of genuine attraction or simply having a bit of fun remains to be seen.
However, at the end of the series, considering that several years have passed since the last meeting that Godou had with Lucretia, she sends a letter to him, which is written that Lucretia kept saying that she is the local wife of Godou, and also at the end calls him her beloved boy. This means that Lucretia is really in love with Godou, since considering her personality and the years that have passed, it is unlikely that Lucretia would have insisted on such a joke.
Erica Blandelli[]
Lucretia and Erica are very much alike as they both enjoy teasing and manipulating people for their own amusement. She even helps Erica trap Godou in Sardinia during the summer, suggesting they get along well enough to cooperate. Despite their similar personalities, Lucretia and Erica are also different at the same time, although their jokes and teasing are the same. However, the difference is the frequency when Erica does it often, and Lucretia sometimes. There are times when Erica can be arrogant, while Lucretia cannot. Erica is relaxed about her duties, while Lucretia takes it seriously. There are times when Erica isn't very good at receiving other people, while Lucretia never shows any dislike to people she knows.
Yuri Mariya[]
Due to the fact that Yuri is such an innocent girl, Lucretia can't help but tease her. She has been known to "teach" Yuri about men in a way that "just happens" to make Godou look bad just to see their troubled expression. However, it can also said that Lucretia also did that because she was bothered with Godou.
