Crossing the Interstellar Overlord

What could possibly be more thrilling than being kidnapped as an emperor while taking royal wedding photos? Guess what! The kidnappers are actually aliens! And there are actually 100 emperors in the same situation, including me! Can I summon the dragon if I gather 100 emperors? Well, there is no summoning, but there is a time travel! In an inexplicable crisis, 100 emperors merged into one. Watch how the protagonist travels through time and builds his interstellar emperor brigade! Embark on the road to becoming an interstellar emperor!