Hard work

aboard a spacecraft, and the mission is... eliminating planets?

Yes. Remove all obstacles that stand in your way.
Oh, and the operator is mihyeon. ?

Yahoi said:

aboard a spacecraft, and the mission is... eliminating planets?

Click to expand...

It is a parody of the novel series "Hitchhiker's Guide to the Galaxy." In the main storyline, there are aliens who will destroy planets for petty reasons, like it is blocking an important trade route for them, or just blocking their view to something that they view as more important.