When they were little: they lived next door to Xi Suyu, and Xi Suyu sat beside them in class.
When they grew up: they still lived next door to Xi Suyu, and at work, Xi Suyu was in the research building right next door.
Were they destined to be entangled with this person forever?
The problem was, Xi Suyu was no good! She had so many devious tricks! And she always liked to tempt her with her body!
Still, at least now Xi Suyu lived above her. Did that mean that when they did that, she could be on top too? [manually inserted goofy face]
Xi Suyu says: Not a chance.
-- Serious blurb --
Living next door, studying next to each other, and working next door, Xi Suyu and Ji Chengfei had been neighbors for so many years that she felt her heart was next door to Ji Chengfei's, too.
Right next door, yet forever unable to enter.