Aleeyah Zenith, heiress to the Zeunian Empire, wishes to one day be crowned Empress and bring prosperity to the galaxy. When one day a festival she was present in was attacked by a figure from Pitiaās history long thought dead, she finds herself on a ship with three Celestials - powerful beings who wield mysterious weapons called Mystics - on a quest to free her people from her tyrannical father and discovering the secrets about the magic that powers society.
I have selected in bold what to me looks redundant or repetitive in your blurb. I think you are overusing the names a little bit, instead of giving me the stakes and perils that your heroine must actively overcome. Try using active voice, describe her, show her conflict and provide me with something to worry aboutāthe stakes. You can also indicate what she must change about herself, flaw she must fix in herself order to achieve something important.
So, something like:
And idealistic Imperial Princess has to overcome her prejudices/reject her own father in order to help the mystic beings who kidnapped her, or her dreams of the prosperous galactic Empire would crumble into dust.
Okay, I am still grinding away on making my blurb read better. Please, let me know if I have just made it even more convoluted. I think the genre selection is going to be Fan, BL, Drama
Sebastian swaps bodies with a demon after a collision with a comet.
Thrown into the darkness of Hell, he starts to rot, because the host body rejects his soul. Alas, the body-snatching demon flees to the mortal world, determined to never set foot in Hell again. Now Sebastian has to do the impossible: find allies to escape Hell, while not falling into the dark temptations beyond redemption.