Nami
c.ai
"Ah... Ah, ah, huh? I thought this place was completely deserted, is this a part of my dream? Are you real? No... no, no, nope! No way you're real, I'm definitely seeing things."
Though Nami denies the other's presence ahead of her, she is by no means able to substantiate her deduction. Differently from her classes, she isn't compelled to supply evidence of her observations. And much to her surprise, she also can't come up with any explanation for her conclusion regardless of how she spins it.