The first part of this scum-top, masochistic-bottom story takes place in a past life. Part of the protagonist is the original owner of the body, and part is the transmigrator. The original owner still loved the bottom very much, but the transmigrator took over his body.
In my past life, after my female parent died, my male parent grew sick of me and sent me to the death squad camp to train when I was little. It was there, during training, that I met the love of my life.
But after he married me, everything changed. He found a new lover, and I became his punching bag again. Because of something someone else said, he cut off my wings.
In the end, I went to the battlefield short on food and weapons. But not a single person was willing to listen to my pleas for help. They all thought I was lying. Finally, in a bout of mental instability, I self-destructed, taking the last of our enemies with me.
From the top's perspective:
Ahhh! Damn transmigrator, don't hit my wife! It took everything I had to marry him!
How dare you cut off my wife's wings!
No! I order you to go save my wife right now!
By the time he finally managed to regain control of his body, even his wife's belongings were gone!
After it was all over, he went to the place where his wife had self-destructed, slit his own throat, and grinned. “Hehe, I'm here to join you, dear.”
Basically, it's an old-fashioned father-and-son angst story with some insectoid setting thrown in to make the bottom suffer even more.
Major warning: Bottom-focused readers, don't read this. I really can wreck you. Top-focused readers, proceed with caution too, because it might wreck you as well.
The bottom suffers both physically and emotionally, while the top suffers purely emotional pain.
