She is the single mother of Josuke Higashikata. A single mother and teacher, Tomoko is known to show a strong temperament, disliking it when guys try to hit on her (as she still loves Joseph) and she gets annoyed quite easily. She also seems to be mildly perceptive, noticing that the seal on her milk that Angelo had given her was broken. Despite her sharp temperament, she is mostly a kind person, particularly to her family and friends.