[No more chocolate for Mello if he tells Yamazaki he used the notebook without any reason Yamazaki could understand himself. He doesn't see the shades of gray, either. his world is too colorful for that.]

A child? Do you mean he's a child? It's...so sad. What kind of world was where you live if a child had to think he'd be the only one who could make that world a better place...?

[For a few seconds he feels sorry for Light.]