Kovu to the rescue/Kopa vouched for him and showing hims compassion

Here is how Kovu rescued Kiara in Jiminy Cricket and the Lion King.

Meanwhile at Pride Rock, Simba is pacing with Zazu several steps away.

Simba: For Kiara's sake, I just hope Kopa knows what he's doing.

Zazu: Don't worry, Simba. She'll be fine. What could happen? {Simba looks up and gasps as he sees the smoke rising.} Simba: No... no! Kiara! {he turns to Zazu} Zazu! Fly ahead. Find her!