Love is a very common theme. The stories often revolve around the OC falling in love with Kang Daniel and vice versa. For example, in many fanfictions, they meet and there's an instant attraction that develops into a deep, passionate love.
One popular Kang Daniel x OC fanfiction is 'My Love for Daniel'. It has a really engaging plot where the OC meets Kang Daniel in an unexpected situation and they gradually develop a deep connection. The story is full of sweet moments and the author does a great job of portraying the characters.
Daniel was a figure known for his unwavering loyalty to God. He served in a foreign court but still adhered to his religious beliefs. This made him some enemies who plotted against him and got him thrown into the lions' den.
Daniel was a man who was very faithful to his God. He was living in a foreign land under a different king. But he didn't abandon his religious practices even when it was against the king's orders.
My answer was not accurate enough. According to my knowledge of online literature, there is no description or mention of a 70-year-old woman named "Kang Kang". You might have remembered the name or the plot wrongly. If you can provide more information, I will try my best to answer your questions.