There Are Only Girls and a Spy on This Deserted Island. 3

It's been 10 years since the shocking retirement of the top-notch child spy known as "Little Hawk"... One condition of my retirement was to keep my true identity a secret. While living a happy school life in this clichéd setting, our boat capsized due to high waves during a school trip. Now, I find myself on a deserted island with the three most distinguished girls in my class. Escaping alone would be easy, but in this situation, protecting my true identity is paramount. How can I get us out of this mess while keeping my identity a secret? But it seems I'm not the only one with a secret...