Responses
i wouldnt say toxic but miscommunication
Their breakup and everything afterwards was definitely toxic. Yujun definitely made himself clear. He dumped and blocked her in every way and made sure to treat her like insignificant, irritating trash if ever their paths crossed.
After yes. But during was just miscommunication
Really, we can all see he just wanted to be successful, but he handled everything terribly. Now that he obtained that success it's obvious that he's incredibly alone and feeling deeply guilty. On the other hand, it's good that Naemun has finally let go and is moving on. They could never truly be together again because that twisted toxic history would always be there festering