Save a Failed Idol's Life - Chapter 152:

Emperor Hegemony, Emperor Might, Saint Sage, Supreme Realm cultivators too! A youth who was determined to become a peerless powerhouse had his dantian destroyed due to an accident. Was that a disappointment, or a desire to become stronger? The youth, Ling Xiao, had unintentionally obtained a cauldron, a sword, and watched as Ling Xiao completed the legends that no one had broken since ancient times. He had done everything he could to surpass the heavens and reach the supreme peak! Holy Emperor's fans 423840230!

The doomsday fell upon the earth when a dragon coffin sealed under a snow mountain for ages shifted, and the civilization of gods and devils began. The whole universe turned into a fantastic new world where everyone could rise to the top through cultivation. A lucky young boy seized the opportunity, and started his journey to be an overlord in cultivation.

- Description from Novelupdates

Seventeen-year-old Hajime Nagumo is your average, everyday otaku. However, his simple life of pulling all-nighters and sleeping in school is suddenly turned upside down when he, along with the rest of his class, is summoned to a fantasy world!

They’re treated like heroes and tasked with the duty of saving the human race from utter extinction.

But what should have been any otaku’s wet dream quickly turns into Hajime’s nightmare? While the rest of his class are blessed with godlike powers, Hajime’s job, Synergist, only has a single transmutation skill. Ridiculed and bullied by his classmates for being weak, he soon finds himself in despair.

Will he be able to survive in this dangerous world of monsters and demons with only a glorified blacksmith’s level of strength?

Thanks to the Goddess, he was reincarnated into nobility!　That should have been great―― but the skill he got, 【Toxin Decomposition EX】 was simply too plain, and he was made fun of everyday at home……