It looks very much like an example of a
Romantic Two-Girl Friendship, a VERY common trope in Japanese media, and one that's actually kinda harmful to the cause of ACTUAL Japanese lesbians because it's assumed to be just a phase of youth ("practice" romance, essentially), and one that the girls are expected to eventually grow out of (so they can form "real" romances with men).
Because shippers are a big part of any fandom, don't expect them to discourage folks from thinking these two might really be in love.
Because lesbianism is a taboo in many cultures, don't expect them to confrim that these two might really be in love, either.
It's a wishy-washy phenomenon that I presonally find rather crass. Either commit to it and make it clear that it is, or make it clear it's not. To just give winks and nudges and let everyone form their own conclusions - I find that to be rather pandering.