Yasumi Watahashi (渡橋泰水 Watahashi Yasumi) is a character introduced in the α timeline of The Dissociation of Haruhi Suzumiya. She is eventually revealed to be a part of Haruhi's subconscious that noticed the SOS Brigade was in trouble and appeared to help them. She vanishes once the crisis is solved.

"Let's meet at the club room at 6:00 PM!"