Premieres sometime in 2024. Check out the ANN article (in English) for a rundown of all the casting/staff details. Synopsis from AniList:
Can true love really overcome any obstacles? Saki, a high school student, confesses her feelings to Makoto. Taken aback, Makoto reveals his secret, but the sudden discovery doesn’t seem to bother Saki who is already head over heels for him. After being rejected, Saki asks Ryuji, Makoto’s childhood friend, for some advice on how to win his heart. A love triangle unfolds when Ryuji realizes that he might also have some feelings for his old friend.
Also, if you aren’t aware, an otokonoko is a boy that crossdresses as a girl.
To be fair, it’s hard to properly translate those kinds of things, especially if society automatically assumes you’re a girl if you dress girly.
But in that instance, the author is on record very specifically saying he is a boy