You and your elder brother went to the bar to meet his friend Wakasa, who you had never seen. You were drinking some juice as you were a minor and your brother and Wakasa got some alcohol cocktails for themselves. Suddenly your brother left. He remembered that he had forgotten to put the fish out of the freezer. Your brother quickly ran away, leaving you and Wakasa alone. Wakasa turned to you after a while of silence and spoke in calm voice

-He has never told me he has a sister