Kyoukai Senjou no Horizon - Volume 8A, Chapter 24: Liberator on the Way

“Great Saint, why did you follow that thieving baldy to rob the sacred mountain?” “Ah, it’s a long story. Back then, that thieving baldy grabbed my neck and asked me, ‘Are you coming with me to the Western Heaven, or should I send you to the Western Heaven...’” “What about you, Marshal Tianpeng?” “He said he was afraid of getting hungry on the way to the West, so he brought some dry rations along.” “...” This is a story filled with joy, scheming, and relentless teasing all the way through.

Mu Yao is wearing a book.
When she woke up, she became the dark, stupid, arrogant female supporting role in the book.
The male protagonist is deeply disgusted by the stupid and ignorant fiancée Mu Yao who comes out of the mountains and often jumps in front of him.
Until one day, Mu Yao took the initiative to ask him to dissolve the engagement.
The male protagonist thought that he could get rid of Mu Yao’s troubles from now on, but unexpectedly, he somehow became the ugly and stupid dog beside Mu Yao.
From then on, during the day, the aloof male lead sneered at Mu Yao.
At night, after becoming a stupid dog, the male lead curled up the dog’s body, and was pitifully hugged by Mu Yao in Xiangruan’s arms, looking up at the dog’s head, begging to be petted.
The heroine will be beautiful, and the hero will wear his soul on the dog raised by the heroine after dark

Fragment:
Everyone knows that the hero has a fiancée who grew up in the countryside. She is said to be ugly and ugly, and she is extremely disgusted by the hero.
Until in the box, everyone saw the hero squatting on the ground, holding the snow-white slender ankle, carefully putting on shoes for the girl who looked like a fairy, and asked in a hoarse voice: “Yaoyao, when will you follow me?” Am I re-engaged?”
Dumbfounded guys: “…”
Damn dirt ugliness! Damn dislike!

1. The heroine is ugly in the early stage, beautiful and squeamish in the later stage, sprinkled with sugar, and the text is so sweet that toothache
2. If you don’t like beauties, please click X, you don’t need to love, please don’t hurt ~ everyone is a soft and civilized beauty. Declined to pick up the list!
3. The author’s scarf will be worn outside the episode: Beauty Wushuang

Content tags: rich family sweet text wearing books cool text
Search keywords: Protagonist: Mu Yao ┃ Supporting role: Next book: “The Rabbit Spirit Who Became a Terminally Ill Male Supporting Partner”, “The Overlord Hiding in the Female Supporting Pocket”, click on the author’s column to collect it ┃ Others: Daily update, sweet sweet
One-sentence introduction: After the hero is dressed as a dog, he chases his wife every day at the crematorium

- Description from novelbuddy

A scientific genius named Thomas Harrier was transmigrated to an imperial prince body after a car accident that took his life. He found out that he is in a world similar to our own with a timeline akin to early twentieth century. The body that he is occupying was the imperial prince of a failing empire who suddenly rose to power after a successful assassination attempt of his father. Unaware that the attack is just the beginning of what is to come. He faces many challenges throughout. Will Thomas Harrier be able to live his second life in peace while running an empire and getting it back to its former glory? Or will he succumb into a conspiracy lurking within the country's borders?

Expect some:

Cold war era techs.

Super battleship with advanced electronics, propulsion, and fire control systems?
Helicopters?
Missiles?
Modern medicines and equipment?
AC-130?
A nuke?
Challenger or Abrams or Leopard?
F-4 Phantom or MIG-21?
Colored TV's.

Everything!!!

PS. Cover not mine, I just found it on google.

Roy died during a war against the Evil God Cult, but somehow, he returned back in time to 30 years in the past where he was just a boy who awaken his summoning magic.