Holy Necromancer: Rebirth of the Strongest Mage - Chapter 4: Faults that are not...

Yan Wushi had walked a path full of blood and corpses.

He did not believe in the good nature of humanity. Even more so, he did not believe that there could be someone with great kindness and sense of justice, who would be so considerate of others without asking anything in return.

One day, Shen Qiao, who was the sect leader of Mount Xuandu, the number one Daoist sect under the heavens, was challenged to a duel but somehow fell off the cliff.

Yan Wushi happened to pass by down there.

Seeing Shen Qiao who was seriously injured to the point of dying, he suddenly came up with a perfect idea…

After thousands of autumns, who could stay eternal?

- Description from Novelupdates

He had four disobedient disciples, who now achieved success, won recognition and established their own sects.

The embarrassing thing is that it was him who drove those four out of his sect to make them independent.

But one day he had an incident and lost his cultivation. His life was hanging by a thread. Wandering around, he walked into his third disciple’s territory.

What should I do?

Mountains and seas can be tamed, days and nights can disappear.

Only you, the exceptional you, refuse to give up.

——

A man blessed with fortune, the best in his generation, had an accident and started anew; broken in body but firm in spirit, he now uses his wisdom to guide his evil disciples back to the right path.

Notes :
The title 参商 (Shēnshāng) has two meanings:
1) Constellations Shen (ch. “Three Stars mansion”, eu. Orion) and Shang (ch. “Heart mansion”, eu. Antares), which never appear at the same time.
2) Two friends/relatives who are separated/estranged and irreconcilable.

- Description from Novelupdates

Long Fei, a cross-timer and doujin, is an otaku who traveled to another world. In the original world, he was an otaku fan of Gundam and military science fiction.

He died in an accident and was reincarnated into another world. The Gundam works he had read before his death and the techniques in various military novels could be brought to another world.

How would he use the Gundam that Long Fei created? What waves can be caused in this different world?