Fear

.

No, that wasn 't quite right.

Anger

.

That wasn 't it.

There were a lot of emotions that would flash through Luffy in an instant at any given time, especially during a fight. It was always hard to pinpoint exactly what he was feeling over the adrenaline and usual raw anger that flooded him during most major fights, but he knew those feelings were there. He always knew what feelings were there. While being focused on other things, expressing his feelings would typically be forgotten, lost somewhere in the enigma that was his food fueled brain.

This, though ' This feeling was new. It wasn 't something he had ever felt before. He didn 't know what it was, and he was clueless on how to express it. The only thing he was sure about was that it related directly to you.