Neiko Kurohime is a corporate slave OL living with her beloved cat, Mashiro. One day, she dies after being hit by a Truck while trying to save Mashiro, but thanks to God's arrangements, she gets to reincarnate into an Isekai along with Mashiro! However, after being caught up in a Saintess Summoning, she is abandoned in a death forest swarming with monsters just because she is a young girl……!? It's a bit of a Hard Mode, but together with her over-Cheated strongest cat, she will travel leisurely and enjoy her new life♪