Isn't it something everyone thinks about at least once? What would I do if the world suddenly ended one day?

<Here’s the news. NASA has reported a shocking announcement: an asteroid with a diameter of 100 km is set to collide with Earth in three days.>

They say imagination can become reality, and just like that, I was abruptly sentenced to death. Having found neither dreams nor desires, I headed to school as usual, sat down, and muttered to myself. "Honestly, does anything I'm doing right now even matter if the world is ending the day after tomorrow?" "How about planting an apple tree?" As I mumbled thoughtlessly, a girl’s voice suddenly came from behind me. "Do you want to go out with me?" And so began my first and last romance three days before the end of the world.