Key is dying. This illness cannot be cured, nor prevented. So a letter is written to explain why he going away for a while.. And when he will return. Sometimes this illness is a good thing, a great thing. But some times this illness can be deadly. This illness... is love.   A/N: 4/27/14 - I messed with the formatting and edited some things so this may look a little different from when the last time you read this, just so you know. Enjoy~