The Tree Father's plan

"Oh? How interesting, these ropes are not just a reconfiguration of soul force. Rather, they are made in a way that restricts the target and prevents him from controlling his soul force as long as he is within your soul domain. May I ask what exactly you are planning to do now?" Robin's chubby avatar raised his eyebrows slightly as he watched the soul ropes, but he didn't seem too surprised

"This is a soul technique that I created after you blew yourself up that day so that this unfortunate incident would not happen again. Now, no matter what you do, you cannot control your soul force within my domain. You can forget any thoughts of escaping or trying to blow yourself up again." A huge smile split the giant soul orb almost in half