I think the game is about: Life .
About how you start out as a baby, learn to take shape of the strong kid, the fast leany teenager and the shouting adult. You learn that changing your 'form' everytime the "outside world" (people, bosses, family) need it (in chase of the other), will in the end be bad for you.
You learn from a friend that being yourself on its own has power (though you had to go true changing for others to find it).
You then learn that after chasing after "the other" you will only have you and those who are true to you.