Here's the thing. A violet power ring found itself onto the paw of shiro-kitsune shiro-kitsune
when traditionally, they tend to go to females. So imagine Shiro's surprise when he discovers himself as an agent of love in possibly the skimpiest and most feminine uniform he's had to wear - it glows pink and does no justice in hiding his "feminine features".
Still, if he utters the oath and takes his role seriously, he might just have what it takes to be a Star Sapphire.
Star Sapphire is property of DC Comics, Shiro belongs to shiro-kitsune shiro-kitsune
and love is selfless and belongs to everyone.