Takemi Aoba is Michio Suzumoto's friend within the Ultra B series narrative. She is a girl caught in a romantic dynamic, receiving affection from both Michio and Tateo Tosaka. This places her firmly within the core social circle impacted by the arrival of the alien infant Ultra B.

Her primary role involves fueling interpersonal conflicts and lighthearted scenarios arising from the competing attentions of Michio and Tateo.