There is a scientist living in the wooden house, but who he is and why he is in this world is unknown. His arrival did not bring too big changes to the world.
——Because he is the only one in this world.
When did the idea come up? Use your superb skills to create a robot and call her "Rin".
He knew his time was running out.
Originally, I wanted to give myself a chat partner, but when I was about to write a program called "Heart" for her, my fingertips paused.
"Rin", a heterosexual twin-like existence "Len" was born.
But in the end, he still couldn't finish the program of "heart". Pass away with regret.
"Rin" and "Len" activated with their incomplete "hearts".
…
"Complete my mission and give you the right to understand the "heart""
[No NP phenomenon, main siblings]