Nanako is a very excitable women, who deeply loves her son Langa Hasegawa. After her late husband passed, when she gets on excited or nervous, she often asks the image of Oliver for advice.

Often jumping to conclusion of her reclusive son. Such as assuming the injuries were from being bullied not skateboarding. When she found out he made a friend she was extremely happy and proud of her son. She loves him dearly, often talking about him to her colleagues.