For those wanting a short resume :
Mercedes and her mother Lydia live in poverty, relying on a small allowance from Mercedes’s father. Wanting to help provide food, Mercedes begins foraging in the mountains. Since she cannot identify edible plants safely, she observes wild boars and uses what they eat as a guide. She gradually learns which plants are safe and also catches fish using gravity magic.
One day, a bear attacks her, forcing Mercedes to defend herself with magic and accidentally save a wild boar. Later, the boar seems to thank her by leaving a pile of edible plants and fruit near her home, helping Mercedes and her family enjoy fuller meals.
Tsukihiro spends so much time gazing at the moon that the stars have gone on strike for more attention !