How so? Maybe he's "nice" to girls but he still threatened... no promised ---to kill her if she came back. He knew Nakyum wasn't leaving since he was there for the conversation, so it isn't like he trusted Nakyum more. But damn, he was drawn so beautifully in this chapter and his eyes were calm. I think his gentle look was due to getting back on his meds, you may be giving him too much credit, however reluctantly.

*sigh* Seungho...... is this character development?