4th Panel: Sakuya found El Dorado

The confusing word in panel 3: ムカムラ
It's a portmanteau of ムカツク (mukatsuku, to feel angry) and ムラムラ (muramura, to get horny).

sgcdonmai said:
The confusing word in panel 3: ムカムラ
It's a portmanteau of ムカツク (mukatsuku, to feel angry) and ムラムラ (muramura, to get horny).

I think you dont have to get confused.... the picture tells everything!