Honkai Impact 3: Enslaved by Kiana at the Start

The female lead in the "Sugar-Free" series: Kiana + Mei

She was overly compassionate in the early stages, but went mad later.

Notice that Otto, who was bored out of his mind, cloned hundreds of Kiana clones, but unsurprisingly, only K423 possessed self-awareness.

Just as the remaining clones were buried by Otto's men, the music from Plants vs. Zombies began to play, and a hand emerged from the ground. "Honkai Impact 3, welcome your king!"

"Even if I, Lina, am poisoned to death by Honkai energy, die outside, or be used as a guinea pig by Mebius, I will never become a beautiful girl."

Soon after, surrounded by countless beautiful girls, Lina said with a silly grin, "Wow, it smells amazing."