Professor Lu's wife, who had been suffering from a chronic illness, died due to the lack of proper medical facilities.
Devastated by her death, Professor Lu vanished without a word.
Some said he had finally given up on humanity altogether, that he had gone to live in isolation somewhere far from the chaos of the world.
Su Jiyai, still just a girl at the time, had searched for him, asking around in the few places where rumors of him still lingered.
But there had been no trace of him. His absence left a gaping hole in her life, and for years she had been haunted by the memory of him, wondering if she would ever see him again.
That night a poster was pinned on the announcement board.
"Whoever can give the information regarding Professor Lu, will have their 1 year's rent waived."
Like every night Su Jiyai came out of her underground base and started to restock things in the supermarket.
