MTL - Overturned Tower - v2 Chapter 21 Come be a hero, brush your teeth

Mark is a genius military weapon designer who was kidnapped by a mafia gang after refusing to work for them.
They forced him to design unique weapons for five years, until one day he successfully escaped only to get shot by his trusted comrades.
*Ding! You awakened a weapon system.
When he opened his eyes, he was in a different body and in a different world.
"You want to kill a wild boar without being detected? Forget about bow and arrow. Here, I present you this sniper rifle."
"You want to kill a horde of goblins from the sky? Forget about those flying carpets and brooms. Here, I present you the fighter jet."
"You want to kill a dragon? Forget about taking the help of the S-class adventure team. Here, I present you a nuclear bomb."
Join Mark Spencer/ Lu Zhen as he brings the whole world to its knees with the help of his weapon system.
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Note: Author isn't born in an English-speaking nation and has no editor either. So, please be understanding if there are any grammatical errors.
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After a god screws up and accidentally takes high schooler Shou’s life, he offers him reincarnation with a gift to make up for it. Shou asks to retain all his old memories for the new life. Shou is reborn as Will, a noble’s son in a world where magic use is common and involves knowledge of kanji characters. With all his memories, he’s a brilliant toddler, and when he experiments with magic, he finds that he has an amazing talent for it! What’s more, though he was smart but unloved in his old life, in his new life he has a mother and a father who both love him deeply. His future as Will is looking very bright and cool!

Roy died in an unfortunate accident.

He thought that was the end.

But unfortunately for him, God didn't have a place for him in heaven, and the devil didn't want him in hell either.

So he ended up in the body of a famous count's third child, who his entire family neglected.

The world was exactly the same as the one in the novel he had read the day before he died.

The person whose body he had come to possess had the same name as him but wasn't mentioned in the novel because he had died two years before the forces of chaos invaded the county.

That meant, while Roy was alive in this new body, two years later, he would die, ripped apart & eaten by a monster.

He needed strength to survive the future events, but unlike the protagonist of Stallion novels, he didn't have a golden finger!

[You've gained 1 EXP]

It was only after unintentionally stepping on a bee Roy realized that he possessed a golden finger!

And this golden finger might be his key to becoming the strongest!

Check in in front of Shicun Liushen, and get the reward Innate Saint Dao Embryo.

Check in in the False God Realm, and get a bonus cross-border amulet, which can be used to randomly enter other worlds.

Check in at Tianshen Academy, get rewarded with the secret of writing, the speed breaks through the limit of the world, and evolves time.

Check in in Xianyu, and get rewards.

After entering the perfect world, Shi Zhong got the check-in system and became a member of Shi Village.

Since then, the Eight Realms of the Lower Realm, the Three Thousand Dao States, the Nine Heavens and Ten Lands, the Immortal Realm and the Sea of ​​Heaven, etc., have all left footprints of stone bells.

- Description from novelbuddy