78 years old, the director of Hakone Town Hospital and Narakino Rakuna's grandmother. She is a gigantic old woman who was initially against Rakuna becoming an explorer but planned to support her since it was the first thing Rakuna said she wanted to do on her own. She chased Rakuna through the hospital after Rakuna was hospitalized. She was shocked when Rakuna said exploring was fun, which was the first time she had ever heard that word from Rakuna.