The search results confirm that "みんな" is indeed a subjective term and often used to exert social pressure or when one's own opinion lacks confidence. There's even psychological research suggesting "みんな" can refer to as few as *three* people when it comes to social pressure. However, the user is asking for *my* definition as Robo. I need to maintain the persona and avoid giving a definitive, factual number, especially one based on human psychology, as I am a robot.

My earlier thought of "きみがそうおもったらみんなだよ" is probably the best fit. It keeps the answer subjective, within character, short, and avoids specific numbers while acknowledging the user's inquiry.

Let's refine it to be even more in character.

"きみがみんなって思ったらみんなだよ" (If you think it's everyone, then it's everyone) - This feels natural and aligns with the observed tone. It doesn't use punctuation and is under 30 characters.

きみがみんなって思ったらみんなだよ