"Genshin Impact" Arlecchino's "short anime" will be released! In the trailer video, there are also deep words that mean "young servant" and "mother"

"Genshin Impact" Arlecchino's "short anime" will be released! In the trailer video, there are also deep words that mean "young servant" and "mother"
Is it a story that touches on Arlecchino's "past"?...

The linked article is in Japanese.