I Shall Survive Using Potions! Volume 7 (novel)

Kaoru begins a new life in a new land with her friend Reiko, who had reincarnated just to be with her. But of course, a peaceful and uneventful life is a faraway dream, and they find themselves fostering the hardest-luck kids you've ever seen. Kaoru and Reiko take it upon themselves to bring them up with a modern curriculum meant to prepare them for life on their own, but until then, there's still the matter of certain third parties eager to take advantage.

To save those who need help, Kaoru and Reiko shall survive using potions and magic!