I Shall Survive Using Potions!

One night after Kaoru Nagase abruptly passed away while returning home from her office job, she finds herself in front of a white-clad man. The man identifies himself as God and expresses regret for the error that led to her premature death. He promises to make it up to Kaoru by reincarnating her in a different planet. The goddess of the next world, Celestine, repairs Kaoru's body and grants her all the requests she makes, including, among other things, the body she had when she was 15 years old, the capacity to create potions with specific effects, and a box with limitless storage. However, Kaoru soon discovers that, unlike what she had been told, this new medieval world lacked much in the way of magic, making her potions highly sought after by rapacious nobility. She could, however, be able to use her potions to survive in this world by drawing on the information she gained from her prior existence.