I like this one, it is so discreet. Little things they do mean a lot because of the difference in their respective social classes and time period. They don't have to flat out say or do things, they know their affection towards each other. Something as discreet as holding pinky fingers. If you think about it, it is a big deal. a rich girl and an oiran???
Just look at the epilogue. That is a couple.
People may not know this; but after the mid 1920s, all the LGBT celebrities in entertainment, art, modeling, etc etc came out for the next ten years as open secrets. If you name a famous movie star, a singer, an artist, a dancer, chances are they were either gay or bi at the time. Just imagine the amount of business Ayano will get if Josephine Baker ordered two dozen dresses...and introduced the both of them to a dozen famous people. Ever heard of "the sewing circle"? Yeah, that include Louise Brooks, Marlene Dietrich, Greta Garbo, and Anna May Wong, etc etc. And we are not even talking about dancers, artists, and sculptors. These connections will make the two of them as immortal icons.
So a few years from now, they will be unlikely to be discreet.
BTW, I have ancestors connected to that social scene back in the 20s...so I know, such as who slept with whom, and who was a lousy lesbian. Wish sensei would do some research, the potential of the story can be endless.