[Dual male leads! Dual male leads! The gong plays the pig to eat the tiger and loves messing around ✖ The shou is often a slacker, knows he's beautiful, is adored by everyone, and is a black-sesame rice ball]
[Interstellar, slightly unhinged (40%)! Beloved by all. Face-slapping and villain-crushing? Two powerful leads, passionate action...]
The good news that isn't good news: He transmigrates and survives before his lovers can start a chaotic love triangle.
The bad news that isn't bad news: He's fighting a dog for food and has to take his sister's place marrying a mentally disabled general. He's practically a living corpse.
Before he gives up:
A master of faking his own death, he's only been married a few days when an enemy spy tries to assassinate the general. He takes the blade for him, protecting the general's mental powers.
Then he fakes his death and runs away, having done his job. The general announces that he's now a widower.
…
While he's slacking off:
He cuts loose, escapes, and makes it into the Imperial Military Academy.
He conceals his identity, bears humiliation, and does his best to play the part of a "dead man."
Whenever he tries to come in last, someone manages to score even lower. He and his four-eyed buddy are a pair of miserable losers!
After every exam, one of them cries, "Holy crap! How did you score even lower than me? Buddy, could you please try harder?"
…
After he's done slacking off:
The most powerful healer in the empire, an honest and sickly beauty, is forced into the fray.
The empire sends him undercover behind enemy lines. All he has to do is team up with his partner and pretend to be married.
Him and his four-eyed buddy: "Holy crap! Why is it you?!"
…
Later, they expose each other's secret identities.
He: "So you're the Imperial General!"
His four-eyed buddy: "So you're my wife, who supposedly died young! And the empire's most powerful healer!"
The secret identities never end. They just keep coming...
Note: The actual male lead doesn't appear until later, so let the story unfold for a while...