Writing a Diary in the Primordial World, I Catch the Demon Emperor Dijun's Eye as a Son-in-Law

Nie Yun wakes up to find he has transmigrated to the Heavenly Court of the Primordial Wilderness, ruled by the demon race. He has become a ninth-rank Heavenly General guarding the Demon Emperor’s Hall. His true form is a demon wolf, his cultivation is weak, and he has no connections or powerful lineage. With the great calamity of the war between the Wu and demon tribes drawing near, Nie Yun just wants to leave the Heavenly Court as soon as possible and avoid becoming cannon fodder. But as a demon, a Heavenly soldier with no backing, he is rejected by the Chan sect and the Jie sect. He wants to join the Western Religion, but the journey is too long, so all he can do is wait for an opportunity. Then a diary System suddenly arrives. As long as he keeps writing in his diary, he can grow stronger. Nie Yun plans to lie low, build up his strength, and wait for a chance to escape the Heavenly Court. But he soon discovers that the great events of the Primordial Wilderness have gone completely off script. Wasn’t the war between the Wu and demon tribes sparked by the death of the Ten Golden Crows? Why has Demon Emperor Jun locked them in the heavenly prison and hung them up for a beating? And why has the conflict turned into a war between the Wu tribe and the Western Religion? Wasn’t the Immortal-Slaying Flying Knife forged by Eastern Emperor Taiyi and given to Lu Ya, the youngest Golden Crow? How did it end up belonging to the eldest princess? This is beyond ridiculous. The Three Religions and the Demon Emperor have actually joined forces to crush the Wu tribe, with the Demon Emperor as their supreme alliance leader? Nie Yun realizes that this version of the Primordial Wilderness has gone completely off the rails. Still, no matter what happens in the Heavenly Court, it is destined to fall before the grand course of Heaven’s Dao. So he plans to find somewhere to hide and cultivate. But how does a lowly Heavenly General end up being appointed the Heavenly Court’s imperial son-in-law? Di Jun: “There’s no problem a princess can’t solve. If one can’t do it, two can. What? You think the Three Xiao Sisters of the Jie sect are lovely? Don’t worry. I have the Investiture of the Gods in my hands, so I can arrange a special favor for you.” “Cihang Daoist is lovely too? Then let her take a trip through the Investiture of the Gods. A good opportunity is worth seizing while it’s close at hand.” Nie Yun: “…” Who wants to be the Heavenly Court’s imperial son-in-law?! Hey… what do you mean by making me the executive vice-heavenly emperor?