That’s a pretty small subset when having both “harem” and “polyamory” tags on a single manga. So, from the way I interpret this foursome is there’s an alpha female and the lesser females, but all love each other the same... yup, quite the fantasy story here. Cute fantasy that won’t see the light of day.
Yet I admire Mira’s “Earth Girls” series. It’s fantasy too, still it has a hint of plausibility to it... especially when there are women-only houses/villages that exist today under exceptional conditions— but they don’t go anywhere near “The L Word”.
The manga isn’t the best, at least it got my brain cell thinking.