Premieres January 2024. They also released a new PV here. Synopsis from AniList:
Yumiella Dolkness is your run-of-the-mill villainess in an otome RPG—except for the fact that she’s also secretly the overpowered hidden boss. But Yumiella wasn’t always Yumiella, you see. In her past life, she was nothing more than an introverted college student and devout gamer. So when she realizes that she’s been reincarnated as a hidden boss, she’s determined to steer clear of the protagonists and avoid her demise at their hands. All she wants is a nice, quiet life. Too bad when her gamer instincts kick in, Yumiella can’t just ignore her awesome stats… A girl’s gotta grind! So, with plenty of time on her hands before starting life at the academy, she gets a little carried away and maxes out her level at 99. And when everyone else finds out, they get the wrong idea about her power—now they think she’s the Demon Lord! Is this OP villainess strong enough to win back the peaceful life she always wanted?!
I’m in love with the lvl 99 Villainess?
The more complete title would be “Villainess Level 99: I May Be the Hidden Boss but I’m Not the Demon Lord” or in romaji, “Akuyaku Reijou Level 99: Watashi wa Ura Boss desu ga Maou de wa Arimasen”, which is a huge mouthful, so it is often shortened. I can’t stand the light novel titles sometimes.
My manga collection says i like villaines manga, so why not an anime.
I am up to date on the manga for this series and have read most of what has been translated of the WN. My spoiler-free take on this series is that it is really funny and I am looking forward to it. The caveat to that is that most of the comedy derives from how comically dense Yumiella is. So, you have to have some tolerance for that. She is so completely oblivious to things that it bothers some people, but for me, it loops past being stupid to being funny again.