Well, it's often used to show the deepening of their relationship or to add a romantic touch.
The reason could be that a kiss symbolizes a significant step in their relationship. It can make the story more engaging and exciting for the audience. Also, it might be a common trope in the genre to attract readers and convey intense feelings.
Chapter 379, "Is This the Way Huaxiu Treats Its Guests?", is the clearest early answer because it turns Huaxiu's situation into a concrete plot event. A useful checkpoint is the way the scene starts with Song Man chuckled twice, evidently displeased, and then positioned...
Chapter 379, "Is This the Way Huaxiu Treats Its Guests?", is the clearest early answer because it turns Liu Suqing's situation into a concrete plot event. It opens with Song Man chuckled twice, evidently displeased, and then positioned...
Chapter 656, "If he's the grandson of the richest man, then I am the richest man!", is the clearest early answer because it turns Shang Shuyue's situation into a concrete plot event.
Chapter 482, "Someone Might Need Me", is the clearest early answer because it turns Hua Country's situation into a concrete plot event. It opens with Other people caught a glimpse of Zhao Lang's cold and stern face and...
Chapter 367, "Help Me Call the Police", is the clearest early answer because it turns Princess Disease's situation into a concrete plot event. It opens with However, before they could approach, another loud "bang" sounded as...
Chapter 660, "Includes Meals and Accommodation?", is the clearest early answer because it turns Bodyguard Ji's situation into a concrete plot event.
Chapter 383, "Doomsday Beehive", is the clearest early answer because it turns Shen Lan's situation into a concrete plot event.
Chapter 510, "The Fake Young Master", is the clearest early answer because it turns Gu Mansion's situation into a concrete plot event. Early on, Ever since that night's family banquet, Gu Qiang hadn't slept soundly....
Chapter 380, "From today on, you no longer need to work here", is the clearest early answer because it turns Miss Jiang's situation into a concrete plot event.
Chapter 359, "You Know Who I Am and You Dare Speak to Me Like This?!", is the clearest early answer because it turns Jin Siyue's situation into a concrete plot event. A useful checkpoint is the way the scene starts with Why do I hear a scream?" "This is...