By the Grace of the Gods: Volume 18 (Light Novel)

Through his study of curses, Ryoma has discovered a surprising way to expand his business empire. Meanwhile, he finally achieves his goal of allowing his familiar, Korumi, to explore lands beyond the manor in the Sea of Trees. Korumi happily assists Ryoma in conducting experiments in various fields, such as food, transportation of goods, winter gear, and more. However, neither of them could have expected what fields their research would lead them to explore.