I'll Never Set Foot in That House Again! Volume 2

After becoming a research fellow at the Royal Research Institute, Chelsea spends her days studying her [Seed Creation] Skill with Glen and Tris. But one day, she gets a top-secret request from the former emperor of the neighboring Radzuel Empire for a cutting of the Spirit Tree to save his people suffering from the miasma. As the contractor to the King of Spirits, Ele, Chelsea alone would be able to plant the cutting to call for Spirits to cleanse the miasma. With Glen, the King of Chronowize’s younger brother, Roize, the former emperor of Radzuel, and the fox-person chef Mika, she sets out for the Empire to help its citizens!

[From J-Novel Club]