Dominate the Universe from Meteorites Falling from the Sky

"The search for area 1377 has been completed and a living planet has been found with surface-level civilization. The system has automatically dispatched a cleanup task." "Tsk, it's another cleanup mission. There really isn't much to gain from the bleak zone. There hasn't been a star field-level civilization for so long. How long has it been since there was no exchange mission? And it's just a planet cleanup. I'm too lazy to go there." "That's right. Let's clean it remotely. It's just a matter of one shot. It saves time and effort." "It's so boring to use bombardment all the time. How about trying a 'seed'? There must be one in the warehouse for a long time. I haven't used it yet." "There's nothing wrong with it, but that thing doesn't seem to be for cleaning, right? The risk factor is unknown. If it gets out of control..." "Tsk, is there any difference between the effect and the cleanup? Besides, there isn't even an observation post in the bleak zone, so who cares." "This is indeed the case. Okay, the seeds are launched, let's go to the next area."