Grandma lives with her grandson, Foo, in the world of *The Kind Devil* (*Yasashii Akuma*). She suffers from an unspecified illness requiring herbal treatment. Her condition drives Foo to venture into the mountains seeking the necessary medicinal herbs. Confined to her home and bedridden due to her illness, Grandma relies on Foo for care and support. She serves as Foo's primary motivation and emotional center. Her relationship with Foo underscores themes of familial duty and compassion. It is Foo's journey to help her that leads him to become lost and encounter the demon Smoochy.