First appeared on TV 176 "Farewell to Black Organizations (Grey Original)".

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At 6 minutes and 4 seconds.

Some people translate this sentence into "I will try my best" or "I will definitely help you".

TV 277 "English Teacher vs Famous Western Detectives (Part I)", Conan also mentioned it to Agasa Hiroshi, and he said "I will protect her" to Zuyuan, who also heard it at that time.

Conan said: "I also told her that if the situation is wrong, I will protect her and ask her not to worry about it ... so I can't let her worry." Later, Conan said that famous saying: "Besides, she is not as strong as she looks ..."

/programs/view/n5BjGmUXVJU/

At 3 minutes and 57 seconds,

So in the later TV 280 "Football Rogue in the Labyrinth (Part II)", Zuhara asked Conan, "Didn't you say you wanted to protect me?" (at 22 minutes and 46 seconds)

hope this helps