Song Xiu is a retired veteran of the quick transmigration agency, reassigned to the cannon fodder department after retirement.
Being cannon fodder is great. You don't have to act from beginning to end. Just clock in on schedule, say a few lines of trash talk, do a few things to provoke the protagonists, then collect your boxed lunch and clock out when the time is up. You can start enjoying a happy retirement, then move on to another world.
Unfortunately, Song Xiu wants to lie flat and enjoy his retirement, but his darling wife has other ideas...
A retired veteran top who wants to lie flat but can never manage it, and is forced to get up and stand up for his wife VS a gloomy, obsessive bottom who delights in fighting people and heaven alike, and is determined to keep opposing the protagonist couple.
Insectoid world
The protagonist couple are a major general abandoned by Song Xiu and a male insect who transmigrated from Earth. As the notorious ex-husband, Song Xiu is responsible for drawing their hatred and helping their relationship become lovey-dovey at record speed.
Song Xiu's darling wife is another female insect, foisted on him after the protagonists divorce. He's a commoner major general who is always outclassed by the protagonist.
Jealous of the protagonist and coveting the protagonist's lover, he schemes both openly and behind the scenes. In the end, he is killed by the protagonist couple on the battlefield as they fight the enemy.
ABO world
Song Xiu is a gold-digging man who abandoned his ex and seduced the ninth prince, a pretty face with nothing else going for him, while still pining for his excellent ex, the protagonist.
After the protagonist, an alpha pretending to be an omega, enters military school, he not only wins the crown prince's favor, but also becomes the idol of every omega in the empire.
Meanwhile, Song Xiu's darling wife turns villainous because her husband doesn't love her and her crown prince brother favors her love rival. In the end, the protagonist and his crown prince top kill him in the name of justice. He ends up in the black market, where he dies miserably.
…
Cultivation world
Song Xiu is the senior disciple of the number one sect. The protagonist is its most gifted junior disciple, who eventually falls in love with the Demon Venerable after a fierce rivalry, and they find their happy ending.
As the senior disciple, Song Xiu has a secret crush on the protagonist. At the same time, for the sake of a cultivation opportunity, he marries the Sword Sect's young master, the foremost swordsman.
The young master of the Sword Sect is not only outmatched by the protagonist in the swordsmanship he prides himself on, but must also endure his cultivation partner's affection for his rival. In the end, he loses to the protagonist in battle and is disgraced. The Demon Venerable digs out his sword bones, completing the protagonist's supreme sword heart.
Song Xiu...
Song Xiu is utterly done with this. Do you know how hard it is for a lifelong bachelor who's been alone for tens of thousands of years to finally have a darling wife?
You don't. You just keep picking on his darling wife!
P.S.
1. The bottom is the same person in every world, and the veteran can recognize his wife.
2. The veteran only has a physical and emotional relationship with his own darling wife.
Theme: Be the protagonist of your own life.
