Klangst
When you're reading/looking at art of klance (Keith x Lance) on tumblr or somewhere else and some sad shit is happening (and it's really angsty)
Lance fell to his knees in defeat. The only thing he could do now was plead. "Keith.. You can't leave Voltron. We need you.. I need you. Doesn't that matter?" He felt tears beginning to spill from his eyes as Keith looked away from him. (Basically klance moments and angst= klangst)