Elena Takamine is a Japanese student at Takamine College, recognized by her distinctive blonde hair and blue eyes. She is the adopted daughter of the college principal, Mr. Takamine, following the death of her biological parents in a car accident.

Her existence becomes pivotal to Shuichi's central revenge plot against Mr. Takamine, stemming from the principal's past sexual coercion that led to Shuichi's mother's suicide. As retribution, Shuichi forces the principal to witness Elena's non-consensual sexual encounter, exploiting her as a tool for vengeance against her adoptive father.

This traumatic event marks her most significant documented involvement. During this sequence, Shuichi experiences a realization concerning his feelings for another character; Elena's personal reactions within the scene remain unelaborated. Subsequently, another character, Noelle, ends her life after concluding her feelings for Shuichi are unreciprocated. Elena's direct relationship to this outcome is unspecified. No additional narrative developments, character arcs, or background details are documented.