What could be the theme of a day 630 word story?

A man dies on his way home in a car accident. Waking up in a totally different world, discovering that life had not only given him another chance but new things to discover, powers beyond his imagination. The powers of Blackagar Boltagon, the king of the Inhumans. But as they say, every power has a price, and his price to pay is silence. But as a wise man once said, silence can be a source of great strength.

When I died I didn't expect to wake up with dark beings of immeasurable power looming over me. I didn't expect to be given new life in a brand new world. Now, armed with a powerful system that makes me stronger after every fight, I might be the last thing standing between the multiverse and absolute annihilation. As I complete quests, defeat foes and become stronger, I still don't know if I'll be able to save this world, my old world and all the worlds in between. "And below... the MAW beckoned..." Come check out the discord to speak to the author and other readers: https://discord.gg/BEJgcRVVev

The 100 descended onto the ground with no idea what they were getting themselves into. One boy did. Will this one boy be able to ensure the 100's survival? And how will he fare knowing his name is Pendragon.

World travelled to far, in order: Arifureta, Ankoku Kishi Monogatari, Disclaimer: THE COVER IS NOT MINE. If you are the owner and want it removed, let me know. All characters used in this fanfiction are not mine except the OCs. All characters go to their respective owners. ====Synopsis If one asked the terrifying strong beings that lives throughout space, they would undoubtedly say, “it’s the one that lives at the center of all.” ... A man who had been studying aboard for a long time, finally returns back to his homeland. But unfortunately, Fate had other plans for him. Due to an unfortunate event, ended up separated from his family during a world transportation. Using the system that he has, he becomes stronger in hope of reuniting with his family. but along the way, he finds out his true identity as well as meet companions that he will deeply care for. Even Fate didn't foresee that thing that she shook awake... That thing called— Or so they thought... ========Extra Info ENGLISH IS NOT MY FIRST LANGUAGE SO EXPECT SOME MISTAKES SUCH AS GRAMMAR AND BAD USE OF WORDS. WARNING! A BIT OF NETORARE IN CHAPTER 2 (When the MC's father cheated on the MC's mother) BUT THAT’S IT.

Follow a young modern Indian guy into the complexities of ancient India.

In a world where everyone could have the super ability to create a legendary castle, Locke was shocked to find that he had obtained the super synthesis ability. Light Knight + Light Knight = Angel Knight! Angel Knight + Angel Knight = Holy Knight! Holy Knight + Holy Knight = God of Light! Locke used this magical fusion skill to make all the creatures summoned by him become supreme gods! When the name "Locke" suddenly ranked first on the universe power ranking list. All the creatures were amazed. "Who is he?" "He actually has the 36-winged god of light?" "A chaotic beast in the void? A creature from another world that eats laws?" "How could there be such a terrifying person who controls so many magical creatures?"