Firefly, I Want to Be the Perfect Herrscher

Kiana: Herrscher of the Void, you don't need to open your eyes! I am Kiana, the Herrscher of Flame from the third planet of the solar system. Herrscher of the Void: Kiana, my life belongs to me, I'll go back with you! Sirin's death doesn't matter! Kiana: Oh? (Surprised) Aren't you sad about Sirin's life? Herrscher of the Void: Human life is very short. I lived for two minutes, I'm still young, I can't sacrifice myself! Kiana: Herrscher of the Void, I didn't expect you to love your life so much. Okay then, I brought a lot of lives, but not for you~ Herrscher of the Void: Herrscher of Flame, you! Kiana: What the hell! (Explosion) Herrscher of the Void: Ahhhhh, Kono Kono Herrscher of the Void! (Ahem, although the synopsis is abstract, it's actually a story about a firefly and Sirin who traveled to an unknown world.)