Oops I accidentally became a Spirit Guardian

Every kingdom has it's own story.I had one to tell others too,but it all came to an end when I suddenly lost everything.I lost my kingdom,my brother and even my body.I became nobody in just matter of days.But when I saw a young man standing in front of his younger friend, glaring at our enemies I knew I had to protect him and guide him through this madness called war that is likely to happen again.Maybe I feel connected to him because of the fire in his eyes,but I suspect it's also because of the color itself that only belonged to the royal family's descendants.Because I also had the same bright purple eyes before I became a colourless spirit...