Post someone who is naive.

Shiemi's (Blue Exorcist) also really naive. Naive enough to think that someone just using her for errands is her friend, and naive enough to ask someone how to wear a uniform. O.o But she's never had বন্ধু before, so . . . .

Mokuba from Yu-Gi-Oh! is really naive particularly when he was younger

Monkey.D.Luffy (One Piece)

Luffy is childlike ........ he can be very naïve in some respects, particularly in response to romance and other serious situations..........he he he he

one word: Yutaka