Because there were many who gave their suggestions, I had a hard time choosing which ones I was interested in translating the most, so I thought I would only choose five of the many suggestions.
I apologize for that, and I hope you also understand and accept my choice. And of the many suggestions, the chosen ones are as follows.
1. Shinwa Densetsu no Eiyuu no Isekaitan (https://www.novelupdates.com/series/shinwa-densetsu-no-eiyuu-no-isekaitan/)
Once upon a time, a boy was referred to as a “War Hero.”
In another world called Aletia, the boy who had saved the Lost Kingdom, conquered their neighbouring countries, and led to the rise of a grand empire decided to throw everything away, returning to the modern era at the cost of his memories.
As three years passed, the boy who was happily enjoying his daily life was once again called back to the other world.
However, what awaited him was the Aletia of 1000 years in the future.
As his past glories became a “myth,” the legend of the youth referred to as the, “Twin Black Hero King,” begins.
PS: Keep it in mind that, I would start from the beginning if this one is chosen.
2. Chronicle Legion – The Road of Conquest (https://www.novelupdates.com/series/chronicle-legion-the-road-of-conquest/)
An encounter between a princess and a young man, resolved to defy destiny…!!
In the late 20th century, due to the invasion led by the resurrected ancient Roman hero, Caesar, Imperial Japan has fallen under the neighboring Eastern Roman Empire’s rule in all but name only!
What enabled Caesar to become the ultimate conqueror was the power known as the “Legion.”
These mysterious corps have taken over as the main weapon in the military forces of major world powers—Armies of winged giant soldiers.
Harboring ambitions to become the sovereign of Japan, Princess Fujinomiya Shiori of Imperial Japan finally takes action.
The princess chooses Tachibana Masatsugu as her trusted general, an ordinary high school student by all accounts.
Nevertheless, he is actually a warrior reborn from the ancient past, another resurrected legatus legionis whose greatness is no less than the mighty hero Caesar…!!
The curtain is raised: An epic fantasy war story revolving around resurrected heroes and beautiful maidens!!
3. The cheat skill "Resurrect the Dead" has been awakened and has revived the ancient demon king's army -the strongest healer who can't let anyone die!- (There's no NU page yet. )
Your power is too dangerous.
Licht, who possesses the cheat skill "Resurrect the Dead", is executed by the king, who feels threatened by his excessive power.
But what no one knew at the time was that the skill of "Resurrect the Dead" could be applied to Licht himself. That Licht, who returned to life, would stand as the greatest enemy of humanity.
This is the story of how Licht threatens the world with the resurrected Demon King's army.
The skill of Reviving the Dead, which was avoided in the human world, became so useful that it became a major asset for the Demon King's Army.
4. Being Able to Edit Skills in Another World, I Gained OP Waifus (https://www.novelupdates.com/series/being-able-to-edit-skills-in-another-world-i-gained-op-waifus/)
Nagi who was summoned to another world acquired the "Skill Structure" skill.
Nagi felt the hints of black job from the king’s request "To defeat the demon king". He leaves the castle and starts his journey with a s*ave girl.
The small demon girl Cecyl, the melee-fighter beast girl Rita , Aine the onee-chan maid, Regii the cursed sword.
Rafiria the warm and fluffy elf and Iris the sea dragon shrine maiden.
Nagi rewrites the girls’ skills and made them into "cheat characters" one after another.
5. A middle-aged hero who died after being betrayed by his beloved disciple comes back to life as the most powerful demon king in history. (There's no NU page yet.)
A middle-aged hero, Freed, defeats the Demon King after a deadly battle. However, he is killed by his beloved disciple who tries to take all the credit for the victory.
Shortly after that, Freed has somehow been resurrected as the new Demon King. The castle is on the verge of being attacked by a group of heroes. His assistant, a beautiful young girl demon, and her subordinates are desperately trying to protect him. In order to save them, Freed has to fight against the heroes.
The former hero becomes the most powerful demon king in history, and the great fight to save the demon world on the verge of destruction begins.