When Fushimi was fourteen, he watched his father come back from the dead with his own eyes.
When he was sixteen, he calculated that the world would end. No one believed him, and he became a laughingstock around the world.
Then, eight years later, a meteorite crashed beside the lake in the city park, and someone stood outside his door shouting, “Fushimi, are you trying to get yourself killed?!”
Fushimi looked at the robot waiting to wake up. “I'm not trying to die. I'm about to stop being single.”
[Note]
1. The gong is a robot with an alien body.
2. An alternate-universe doomsday setting.
3. Contains lots of made-up, pseudo-scientific worldbuilding.
Theme: Never give up.