The exact recording behind this clip is undocumented, which is common for short anime-adjacent meme sounds that spread through soundboards rather than official releases. The name pairs 'hituji' (sheep) with 'arigatou' (thank you), and fans use it as a shorthand for soft, wholesome gratitude in edits, streams and reaction videos. It circulates in the same ecosystem as anime voice memes and VTuber culture, where a two-second thank-you can carry a whole mood. Its appeal is simple: it is brief, warm and instantly readable, so it keeps getting reused whenever a creator wants a cute, sincere beat of thanks.