Naruto: Uchiha's Unserious Saga - Chapter 374: Laboratory Affairs

Song Shi came to an immortal world where demons and monsters were rampant. He thought he was going to take a trepidatious road to immortality, but ended up awakening to a death-defying system, gaining strength from death and getting stronger every time he died.

The whole style took a sudden change. Other people cultivated to seek immortality, but he was already immortal, and could only seek immortality by having himself killed in various ways, either by killing himself or by letting people kill him.

“You were killed 10 times by the Yin spirit, awakening the spiritual root of fire!”

“You were killed 10 times by the zombie, awakening the innate divine power!”

“You were killed 10 times for excess cultivation, awakening the Daoist heart!”

“You were killed by a formation, formation level +1!”

“You were killed by an alchemy explosion, +1 alchemy level!”

Pure Yang Spiritual Body, Nine Yang Divine Body, Sun Sacred Body; Vajra Spiritual Body, Golden Divine Body, Draconic Sacred Body; Psychic Sword Body, Innate Dao Body; Formation Master, Alchemy Master...

His cultivation was a fun journey, and he kept finding ways to kill himself on his way to the top of the immortal path...

Years later, the world rumor had it that once Song Shi died, the immortals were terrified, the demons trembled, and ten thousand Buddhas retreated!

Pain, Pain, Go Away is a novel by Sugaru Miaki, also known as Fafoo, author of Starting Over and Three Days of Happiness. Unlike Miaki’s previous two books, Pain, Pain, Go Away is not a rewrite of any story posted to 2ch, but an entirely original one.

The plot involves a young man who becomes a killer (by accident) – but his victim has the power of “postponement,” temporarily delaying her death.

Su Yun was a prodigy, blessed by the gods. However, life is never so easy. Soon after reaching 6th stage in spirit novice realm cultivation, his progress stagnated due to incurring a rare medical condition.

A few years go by, and Su Yun has spent all his time gambling or drinking, wasting his youth away, but one day everything changes. Qing Er, the only one who stood by him was forced by his clan to be a sacrificial bride to someone she didn’t love, only to be executed by the groom on the wedding night for fleeing. Burning for revenge, he scoured the world for a cure for his rare medical condition from both righteous and villainous side.

Countless years go by, and finally Su Yun not only found a way to cure his rare condition but also gain immense knowledge on a myriad of martial techniques.

But before he could fully cure himself, he received news that the groom suffered an assault that damaged his internal organs. Rather than wait for decades to become fully cured, Su Yun decided to hatch a plan for the assassinate of the groom. Unfortunately, he underestimated the strength of the groom’s family and was killed instead.

Then he regains consciousness. He comes to a realization that he went 15 years in the past. This time, he vowed to protect Qing Er, but first he must cure his rare medical condition. Will he learn from the mistakes of his previous life or is everything still set in stone?

- Description from Novelupdates