I remember an anon implying Arlecchino isn't connected to Ronova, only the Crimson Moon. But the thing is, Raiden also has been showed with a crimson moon and she's deeply connected to Ronova's eye motif. Weirdly enough, I've noticed Perinheri's book cover, which describes the Crimson Moon dynasty, also features an eye. On top of it, Arlecchino's demo has a red eye with a shape similar to the ones you see in Inazuma as well.

This whole thing makes me wonder what's the exact connection between Ronova and the Crimson Moon.

https://genshin-impact.fandom.com/wiki/Perinheri
https://youtu.be/TnYFVP3c_bs?si=Lvxf6tBxY-3I9r5O