Any asian romance drama where the male treats the female like child?

Please help me. You can recommend me anything that comes to your mind. He should treat her like she is a child. He sees her as naive, innocent, cute, childish etc but in a good way. He always protect her. I love that short, small, cute, naive, innocent female X tall, strong, smart, protective male couples. I would like it if the male lead falls in love first but it's not a must. Also no sad/open ending pls. My english is not so good so sorry for the mistakes.

 Sam:

professionally single 

I looked some videos on youtube and it is what I want! Thanks so much.