Responses
so, basically, yujin's reason for leaving Aaron was understandable. Aaron got mad because his lullaby left without a word for a long time and now that he have him back, he's keeping him all by himself by constantly raping and locking him up, but the locking part is gone as he is now roaming free with a limitation lol
Yujin’s sudden and painful decision to leave Aaron is driven by a toxic mix of deep-rooted family trauma, suffocating guilt, and emotional exhaustion. At the heart of their relationship is a dark past that Aaron is initially unaware of: when they were children, Yujin’s father attempted to murder Aaron. Because of this horrific connection, Yujin carries an immense, secret burden of guilt, constantly feeling that he is unworthy of Aaron's affection and that his very presence is a reminder of a tragedy.
This guilt becomes completely unmanageable due to the intense psychological pressure of their daily arrangement. Aaron suffers from severe insomnia and can only find peace and sleep when listening to Yujin’s voice, effectively tethering Aaron's mental well-being entirely to Yujin. As their romantic feelings deepen, Yujin’s anxiety spikes; he lives in constant fear of the day Aaron discovers the truth about his father, believing it will utterly destroy them both.
Ultimately, the emotional weight of keeping this secret while acting as Aaron’s psychological lifeline becomes too much for Yujin to bear. Driven by severe anxiety and a self-sabotaging need to protect Aaron from his family's dark past, Yujin chooses flight over confrontation. He abruptly breaks his contract, tells a lie to cut ties, and runs away to escape the crushing emotional pressure before his secrets can unravel in front of the person he loves.