Gal Maid to Akuyaku Reijou: Ojoo-sama no Happy End shika Katan!

A woman named Selina is reborn into a fantasy world based on an otome game enjoyed by her anime-loving friends. She awakens as an unnamed background character and is assigned as a servant to Almeria, the game's villainess. The story follows Selina's efforts to support Almeria, using her knowledge from her past life as a carefree girl, in hopes of ensuring the villainess's happiness.