Please feel free to rephrase your question or provide more details, and I'll do my best to provide a helpful and informative response.
The URL encoding %2A appears when someone copies a search query or a forum link that contains asterisks. In your keyword, m%2A%2Ako means the original text was m**ko .
The %2A%2A in the URL-encoded text likely represents ** (two asterisks), which is often used as a placeholder for censored letters in Japanese.