For those who want high-quality snippets, soundboard websites (often used by streamers and gamers) are a goldmine. Searching for "Anime Alert" or "Senpai Alert" often brings up the exact clip you are looking for.
The phrase "Ara Ara" is a staple anime trope, often used by "onee-san" (older sister) archetypes to tease younger characters. When paired with "Onii-sama," it creates a unique, endearing alert that stands out from standard digital pings. It is widely used for: Ara Onii-Sama Message ringtone by pactw - Zedge