The Eighth Tear

Younger man, partially fictionalized technology setting, innocent-looking but secretly dark, perhaps nonhuman? [Obsessive, clingy puppy top Xie Yu x divine, cool-headed kitten bottom Xie Chang]. Xie Chang is a calligrapher who was subjected to experiments. Xie Yu was created through cell cultivation. For various reasons, he needs to stay with Xie Chang to become more perfect. The two were separated for seven years, during which Xie Chang repeatedly changed residences to evade Xie Yu, but Xie Yu still found him...