When Eri Arisaki wakes up, she is put in prison for some reason in a different world. The prison has its own rules, and Eri is eventually involved in a big conspiracy... A different world prison survival that unfolds in a prison full of girls of different races, each with their own quirks, begins!
A Girl's Prison in Another World is a completed manga by Izumi Minami, first published in 2021. It blends comedy, girls' love, isekai and fantasy. You can read all 24 available chapters of A Girl's Prison in Another World online for free on MangaPulse; the newest is Chapter 23, added 2023-07-20. The series is finished, so you can read it from start to end in one go.