FWIW this wrapped up neatly. Short time skip, they all have careers, still a happy poly throuple. I give this one credit for depicting a non-hentai poly relationship.
My head-canon postscript is a drama arc in which Fushimi is outed for being in a relationship, causing panic at her agency. But half the tabloids think it's a guy, and half think it's a girl. None of them correctly realize it's a trio.