Shizuka Tatenashi/Relationships

Yuzuru Otonashi
While their exact relationship hasn't been fully disclosed, Tatenashi holds Otonashi to high regard and deeply cares about him. After her failed attempt to use Hatsune as a means to bring Otonashi back, she calls Otonashi to tell him he was relieved and apologized. It is also revealed that they both have each other's personal phone numbers, but this is most likely done for work purposes rather than personal reasons.