What's the relationship between the skirmisher and Mona?

The skirmisher and Mona have stories, interactions, and nothing to do with them.

The full name of this straggler is Scalamchi, claiming to be a ronin from Mi's wife and the sixth executive of a fool. In the story of the star extinction activity that never came back, the traveler and the emperor's daughter met a straggler looking for a winery worker, who was investigating the star extinction event.

In the later plot, the skirmisher tried to sneak up on the protagonist when he greeted him with a smile, but Mona's divination ability found him and fled with the travelers and others.

Brief introduction of Mona

Mona is a five-star water figure in the game Genshin Impact, a mysterious girl astrologer who calls herself "Mona the Great Astrologer".

Mona, she is strong enough to meet her name, knowledgeable and arrogant. Although she lives in poverty, she is determined not to use divination for profit. It is this persistence that makes Mona always worry about her livelihood.