Another place could be FanFiction.net. There are many undertale fanfictions there as well. Just use the search function and type in 'undertale dragon' to find relevant stories. However, be aware that the quality may vary, so you might need to read a few to find the really good ones.
Chapter 792, "Is This, This God Jiang?!", is the clearest early answer because it turns Jiang Yu's situation into a concrete plot event. A useful checkpoint is the way the scene starts with The sound of the suona did not appear abruptly but even ignited the...
Chapter 831, "Brother, who do you like the most?", is the clearest early answer because it turns Jiang Li's situation into a concrete plot event. Early on, Just as Jiang Shixu finished washing up and was getting ready to.... By the end, It seems Sister also likes this handsome brother a lot;
Chapter 17 is the strongest chapter-level answer because it starts from Jiang Li glanced at Jiang Shixu, who was tense and anxious behind her, and... and follows through on I've been a mother for more than ten years but never tasted anything made....
Chapter 787, "Changing Fortune", is the clearest early answer because it turns Song Xue's situation into a concrete plot event. The setup is How could she know about these things?, but the pressure keeps building through Xiao Xue had grown up with Yafei and knew a lot about her, but she....
Chapter 640, "Fanning the Flames Combo", is the clearest early answer because it turns Zhao Lang's situation into a concrete plot event. Early on, Jiang Li choked up even more.. By the end, It's a bit difficult." Here, low shrubs and towering birches....
Chapter 767, "Jiang, Jiang Yu?!", is the clearest early answer because it turns Jiang's situation into a concrete plot event.
Chapter 793, "Back After Many Years, with a Son", is the clearest early answer because it turns Shen Lan's situation into a concrete plot event. Early on, [????] [?????????] [??????????] With Jiang Mingyu's voice coming....
Chapter 591, "Is There a Way to Get to the Bottom of the Lake?", is the clearest early answer because it turns Feng Shui's situation into a concrete plot event. A useful checkpoint is the way the scene starts with But my focus isn't that," Jiang Li's tone shifted, "What exactly is...
Chapter 855, "This is Made of Gold!", is the clearest early answer because it turns Jiang Li's situation into a concrete plot event. It opens with Sure enough, kids with sweet mouths get candy. and closes on This one little Pixiu can buy you a room full of toys!" Jiang Bufan:....
Chapter 785, "Signing with Taiqi", is the clearest early answer because it turns Shiguang's situation into a concrete plot event. The chapter gives readers a real answer by opening on Qiao Shiqing hurried over, her complexion looking quite poor.