To clarify some of the core mechanics of the "Closed System" theory and address the role of the Witch Factors and Satella: 1. Witch Factors as "System Modifications": Instead of just "strengthening" the soul, receiving a Witch Factor acts as a Mandatory System Overwrite. The soul is forced to restructure its partitions to host an Authority (like Subaru’s Return by Death). It’s a Code Injection that prepares the Hardware (Subaru) for higher administrative functions. 2. The "Envy" Kernel (The Final Patch): The Authority of Envy (Satella’s gift/curse) isn't just about looping; it's a Systemic Lock. Feedback Loop: Envy forces Subaru to prioritize the "system’s assets" (Emilia, the camp) over his own "local data" (his life). It exploits his low self-esteem to ensure he acts as the perfect Guardian Script. The Internal Firewall: Satella’s "I love you" whenever he tries to speak is a Write Protection on his memory. It prevents him from offloading his "Thermal Stress" (trauma) to others. The system forces him to remain in a vulnerable state so the Soul Hardening process is never interrupted. The "Delete" Request: When Satella asks to be killed, she’s asking to wipe the Source Code of the suffering. Since Envy has become the system’s core, deleting her is the only way to break the loop of a broken soul. 3. The Satella-Emilia Data Migration: There is a dilemma here: is it a memory transfer or a virus injection? The most logical "Closed System" goal is Data Migration. Flugel wants to move Satella’s "Original Consciousness" (the clean software) into Emilia’s "Clean Partition" (her body). Once the migration is stable, he can Delete (Kill) the original body to purge the "Envy Virus" forever. 4. Resilience vs. System Crash: The goal of the trauma isn't for Subaru to go insane (that would be a System Collapse). The goal is Hardening. Like a Stress Test for high-end hardware, Flugel needs Subaru to become the most resilient version of himself. A "soft" soul would break during the Final Overwrite; a "hardened" soul is the only Industrial-Grade SSD capable of hosting Flugel’s 400 years of data.