To understand why Emilia took so long to reciprocate Subaru's feelings, readers must look at her biological and psychological age. While Emilia's physical body resembles an eighteen-year-old, she spent roughly a century frozen in magic ice inside the Elior Forest. When Puck thawed her out, she possessed the life experience of an isolated seven-year-old child.
Puck compounded this vulnerability by placing strict contractual seals on her memories. He wanted to shield her from the guilt of freezing her clan and the terror of Pandora's assault. That decision carried heavy collateral damage. Puck deliberately kept Emilia sheltered, filtering her social development and managing her worldview to keep her dependent on him.
Throughout Arc 1 and Arc 2, Emilia viewed Subaru through the lens of a frightened outcast desperate not to hurt anyone. Her initial alias, "Satella," was a deliberate warning meant to scare Subaru away for his own safety. When Subaru persisted in helping her, Emilia felt intense gratitude, but her heart remained sealed. She simply lacked the cognitive framework to process romantic intent. Subaru was an odd boy who risked his life for reasons she could not grasp, while she remained an emotionally fragile girl living in an adult body.
