Ando_Ajo

A man with a unique name, Ue (spelling; Yu), decides to accept an offer to join a program called 'Into The Hole' because he is bored with his life.
The program requires someone to be flown and enter a Black Hole which for thousands of years has always been a mystery to scientists.
This program is sponsored by Hidetoshi Akimura, who spent his entire life dedicated to studying a Black Hole which they named the Black Eye, somewhere in the Norma Arm, Milky Way.
While Ue is on his mission to the Black Eye, there is chaos on Earth, a catastrophe that nearly wipes out humanity.
The disaster was caused by the Healer serum, a serum previously touted as a miracle serum and highly revered by the public, now become a deadly serum that wipes out more than two-thirds of the Earth's population.
Can Ue complete his mission?
And what about the fate of the remaining human beings on Earth?
Find the answer in this novel.

The Last Man in the Universe

Yu played the video message that was the oldest of the seven messages that had just arrived.

"Hi, Yu, I'm Hardy," said a 35-year-old man in the recording. "You remember me? Aah, sorry, we haven't met yet. I'm the one in charge of communications on your plane with us on Earth."

Yu just kept quiet. But at least he was quite happy because he could finally hear other human voices besides his own, even if it was only a video recording.

Disaster Source