The Girl Bound by a Master–servant Contract is to Be Imprisoned by Love

Bodyguard Liya stayed up all night binge-reading a novel, and the next day, groggy and worn out, she somehow mysteriously transmigrated into the very book. She became the villainess’s guard (a bodyguard). Hehe, talk about a perfect fit for her profession. ………… Except she ended up as the captain of the guards (head bodyguard), hehe, a promotion! But then—she got bound by a master–servant contract. Whimper, no more freedom! Luckily, the villainess didn’t seem interested in her, hehe!

“You want to leave? Come with me to the basement…”

“Wait, wasn’t this basement supposed to be for imprisoning the protagonist? Why am I the one getting locked up instead?”

“…What should you call me?”

“M… Mistress…”