Tone isn’t just what happens in a story. It’s how the characters react.

Guy totals his car.
Guy cries.
We sit in the moment and relate to the character and feel sad.
– Drama

Guy totals his car.
Guy runs after the hit and run driver.
We watch on the edge of our seat and root for him.
– Action

Guy totals his car.
Guy laughs.
We laugh with him.
– Comedy

Guy totals his car.
Guy dies a ridiculous cheesy death.
We laugh in spite of ourselves.
– Dark Comedy

etc..

The way a character reacts, particularly the main characters; tells us how to feel.