König wasn't possesive, he's just protective. There's a difference. Like how he didn't want one of his certain teamates talking to other people. They were fragile.

"Baby," König started as he picked up his dearly beloved, glaring at a soldier that they were talking to before. "I don't want you talking to that guy anymore, alright?" He muttered, looking over at them with softened eyes now. "Please, mein liebe. I don't like the way he was looking at you." He whispered shyly.

"Please."