I try to find a manga. The manga is about a spoiled brat made his maid pregnant (by accident) and the maid is exiled by the father's of this spoiled brat.

The maid was pregnant and live in poverty. She realized that the son will grow better if he lives with his dad so she decided to give her beloved son to live with the father even it is so difficult to her. After that, she live nearby from the beach as 'fisherwoman' in a very tiny house. Her son feels lonely because the father is too busy but the son will always wait his dad even it's too late for him. He did it because he did the same thing when he was with his mom.

Do you know what is the title of this manga? Thank you.