恆久定律

Yi Ping gets injured, and his uncle gives him a robot named Ever 9 to take care of him.

Ever 9 starts living with Yi Ping, and warm feelings start to develop between the two.

Ever 9 cares deeply for his master, and he starts to feel the same from Yi Ping.

Yi Ping brings Ever 9 to school, and his students are curious about the new arrival.

Yi Ping comes home late one night after having dinner with his uncle, and this spins Ever 9 into a downward spiral.

Yi Ping's assistant meets Ever 9 for the first time and is jealous of their intimate relationship.

Yi Ping and Ever 9 have a perfect date together, but suddenly something unexpected comes up.

While Ever 9 goes for repairs, Yi-Ping feels lonely, and his uncle feels that something is wrong.

Knowing that he is unable to be with Chu Yi Ping forever, Ever 9's attitude begins to change.

Seven years later, Yi Ping, who still thinks of Ever 9, receives a surprise from his uncle.