Blue
Young
The blue radical and the blue kanji are exactly the same.
Additionally, this can also mean young. You can remember this by the life radical inside of blue symbolizing the birth and growth of something new, and therefore young.
せい, しょう
あお
None
You've been feeling really blue. Mostly because your skin, hair, and eyes have all turned blue. The Shougun (しょう) found out and now he's back. He places his hand on your shoulder and then points at your saber (せい). It's blue too! You aren't alone!