Ononoki Yotsugi is a fan-favorite character from Nisio Isin's Monogatari series, animated by Shaft, a doll-like oddity whose deadpan monotone made her a meme staple. Voiced by Saori Hayami, she is known for delivering cheerful lines with complete emotional flatness, and short clips of those moments circulate widely across anime meme communities as reaction sounds. Rather than coming from one famous episode, her appeal is cumulative: every appearance adds another deadpan quote for fans to rip, remix, and drop into edits, which is why a two-second 'peace peace' still works years later.