Who said "I won't give up, and I won't let my comrades down."?

This quote is attributed to Sakura Haruno.

I won't give up, and I won't let my comrades down. - Sakura Haruno

"I won't give up, and I won't let my comrades down."

Sakura Haruno Perseverance

"I'm not gonna run away, I never go back on my word!"

"A true ninja is one who endures."

"I'm always going to be there for you, even if it's just as a friend."

"I made a promise that I would help you achieve your dreams."

"Perseverance is the key to success."

"Don't give up on what you believe in."

"I've been through worse."

"You learn to live with the pain."