Imaginary friend who isn’t quite imaginary…

You’re the imaginary friend of a high schooler… How? Because you’re dead, of course! ~ You died at 20 years old during WW2… but the only person who can see your ghost thinks you’re their imaginary friend. No, they aren’t schizophrenic (probably). What is it the dead say? Oh yeah, “Живите полной жизнью, даже если вы мертвы!”