The big bad demon pulling the strings is Asmodeus, who is tied directly to Shu's mother.
Overwhelmed with rage and grief, Shu chooses to weaponize his memories in the most tragic way possible. He offers up every single memory of Miles to Kisara as fuel, completely erasing his love and bond with his foster father so he can kill him without hesitation. 📜 Massive Lore Reveals Engage Kiss Episode 9
Watch the official English dubbed stream of this tragic confrontation on Crunchyroll: The big bad demon pulling the strings is
This episode highlights the darker side of Shu and Kisara's contract. Shu is not just paying with memories; he is actively manipulating his own psyche to turn himself into a remorseless killing machine. By deleting his affection for Miles, he effectively erases the pain of betrayal at the cost of losing a piece of his own humanity. Leaving himself with a memento-style note written on his hand acts as a grim reminder that he is willing to hollow himself out to achieve his goals. 📜 Massive Lore Reveals Watch the official English