Packing.

I'm not running away. This is not running away. It's not cowardly in the slightest. I'm no coward, it's just ... I really don't want to face them right now. It's easier for everyone if I just go and spend some time away. Maybe they'll forget that they're angry with me. Isn't this just like what Splinter always tells us? To be like the water? Letting things go over us? So I'm going to do just that. I'll be like the water. I'll wait for things to run their course, and then when the flood is over, I'll be back.

Besides, people need me there. Better still, I think they want me there. From the looks of things around here, I can't say the same.
But, I'll leave a note this time. So that should they come wondering, they'll know where I am. Not that they'd believe it.

*on scrap piece of paper, he scrawls the following*
Gone to the ends of the universe to find some answers.
Don't wait up.

-Raph

That should be everything.
*Turns off light, and silently leaves lair*
Now for my To Do list.