MTL - Don’t Heal the Others - Chapter 535 Level 66 (first)

In the mortal realm where alchemy has long declined, a young man by chance obtains a supreme treasure, the Reincarnation Pearl, from the immortal world. Surprisingly, within this treasure resides the remnant soul of a female immortal sovereign who possesses the highest alchemical skills of the immortal world.“Do you desire power? Want to learn alchemy? Wish to ascend to the immortal world?”“I want you”Thus begins Mu Can's extraordinary journey against the heavens.

Noah Weaverheart was nothing but a poor boy with zero talent in Magic.Stuck at the Apprentice Magus rank for years, he was bullied and looked down upon by everyone in the academy.His pathetic life met an end at the hands of an arrogant noble, who decided to bury him and go about his day like nothing happened.However, as he drifted in between the space between life and afterlife, a set of notifications appeared before Noah.[Suitable Host Found!][Initializing The Supreme Magus System!][…][ERROR! ERROR! ERROR!]Before he could understand what was going on, he found himself jolted back to life, but the notifications wouldn’t stop flooding his vision.[A bug has been discovered in the system!][Trying to fix bug…][Fixing Bug…][…][ERROR! FIXING FAILED!][ERROR! SYSTEM FALLING APART!][…][ERROR! BUG UNABLE TO BE FIXED!][The system has been corroded by the bug. All parameters broken down. Required EXP for leveling up now fixed, limits on quests completely removed, Penalty on quests disabled.]At first, he thought it was a disaster.Then he realized—this bug wasn’t a curse, but a huge blessing in disguise!With no restrictions holding him back, Noah could now level up endlessly—faster and stronger than anyone alive.From worthless trash to an unstoppable force, he would rise above all… becoming the most powerful magus in existence!But the more he learns about his broken system… he realized the bug might be something far greater, and far more dangerous than he ever imagined.

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

I got transmigrated into a game I’ve never seen before.

I thought it was a top-notch RPG and spent 30 years on it.

I retired as a war hero and planned to spend my remaining time leisurely.

But it turns out, it was an academy story?