BNHA: God of Explosions - Chapter 12: Emotions on edge

Cairn is a prince who is already tired of ruling. Faced with an imminent coronation and an overbearing father, he wants nothing more than to drown his responsibilities in cheap liquor and poor decisions. With the help of his sister, he hatches a plan to escape the clutches of the throne once and for all. It all goes terribly wrong, and Cairn finds his priorities shifting in the face of unimaginable tragedy. The change of heart comes too late, however, and Cairn dies. He reawakens to find himself transported ten years in the past. He immediately begins to plan for the future, only to discover his killer has somehow followed him. To succeed, Cairn must unite the kingdom and discover the motivation of his killer, using as many tries as it takes. ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++I exhausted pretty much every time loop story ever written and decided to write my own. You'll see a few similarities here between this story and some existing stories, at least initially. There's a lot of inspiration drawn from both MoL and Re:Zero, though in terms of pathos and darkness, this story leans more towards the latter. Be warned, it is something of a slow burn. The main character will grow and become powerful, but a theme of this story is that power comes slowly and often at great cost.

Perhaps it is the choice of fate. As a senior otaku, Qian Lingfeng got the “steel shell system”. However, when he swept the world with the system, became a local rich man, made all kinds of beautiful women, opened a harem, and realized the ultimate fantasy of thousands of otaku, he found that things seemed far from simple!
When the end comes, biochemical zombies suddenly come down, fierce beasts are in power, bloodthirsty zerg roam to kill the world, and human lives are comparable to dirt. Where will weak human beings go in this world? Is humanity going to be extinct? Or … can an otaku save the fate of the human race?

- Description from Novelupdates

Everyone transmigrated to the High Continent and became a Lord to participate in the conquest between Lords from all the other races.
A few lucky Lords would receive Lord Talents.
“Hah! My talent is the Knight’s Hall, a Diamond-Tier Lord Talent! My subjects can job change into a unique warrior class, the Combat Spirit Knight!”
“My Lord Talent is the King of Abyss. I can summon demons to become my subjects!”
“I have a lot of subjects who are scientists! I can create advanced technologies!”
“My Talent allows me to cultivate! I’ll become a celestial!”
Zhou Zhou received a Legendary-Tier Lord Talent — 100% drop rate!
Not only could he see the things he would receive from an enemy, but his enemies would drop all of their loot when they were defeated.
“Watch as I make you drop your Talents!”

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Zhou Xiaochuan became the emperor of the subjugated country and obtained the sign-in system.

As long as you sign in every day, you can get random rewards.

“Sign in successfully, congratulations on getting the Summoning Card.”

“Sign-in is successful, congratulations on getting the seeds of dynasty luck.”

“Sign in successfully, congratulations on getting 100,000 Heavenly Soldiers…”

 …

From now on, the gods and demons of all realms will accompany them, and the gods of the gods will follow them, opening up the prosperous era of the dynasty!

“Your Majesty, it’s time for the morning.”

“Wait, I’ll sign one first…”

- Description from novelbuddy