Ohayo is the casual Japanese way to say good morning, and pairing it with darling turns a simple greeting into an affectionate anime-style wake-up call. The clip spread through anime meme edits, TikTok videos and soundboards, where short cute voice lines are shared as reactions and alarms. It sits alongside other short anime greetings and catchphrases such as tuturu, which are reused because a single familiar line can carry the whole joke. Its popularity comes from that mix of sweetness and exaggeration, making an ordinary morning message feel like a scene from a romance anime.