My Classmate is 200 Million Years Old - Chapter 180

When Ji Mingxia woke up, he had transmigrated as the male supporting lead in a horror novel, and had become the protagonist shou’s love mentor.

His open view of love guides the protagonist shou to embrace his sexuality; every time he appears, it’s to promote the protagonist gong’s love.

To survive, Ji Mingxia had to follow the plot.

When the protagonist shou tells him about his troubles, he gently comforts the protagonist shou;

When the protagonist shou suffers heavy physical and mental trauma, he actively treats the protagonist shou;

When the protagonist shou comes across danger, he recklessly accompanies the protagonist shou;

When the protagonist shou confesses to him, he…

The protagonist gong? Where did the protagonist gong go!

What about the supporting characters? Hurry, spare tires!

“You mean those shifty-eyed men who peek at you? They’ll never show up again. ”

Ji Mingxia: “=0=”

Please wake up, protagonist! They’re looking at you, not me!

Yu Ning X Ji Mingxia

Solitary and reclusive, sweet attacker after being tempted × calm on the surface but terrified in the heart

- Description from Novelupdates

Jiang Bai woke up one day and found with shock that he had transmigrated to a parallel world that is similar to Earth. There, he was granted a cheat system to help him forge the path of a tyrant in this new world. He was now stuck in this parallel world body, the body of a weak and cowardly person. Join Jiang Bai as he rose to the top in this new world!

- Description from Novelupdates

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.