The Old Friend Is Still the Same

Female general disguised as a man × dark-hearted prince from an enemy nation

The male lead is reborn in the first arc, and the female lead is reborn in the second. They are separate worlds.

Reunited with the young Su Nian (Old Friends arc)

In the prison cell, Feng Cheng's words reached Su Nian's ears: “General, I love you.” Unlike his earlier confession, which had brimmed with profound affection and endless longing, this time his words were filled with a deep sense of cherishing. He seemed to be holding back an overwhelming love, speaking softly as if afraid of burning her.

After drifting about as a spirit, Su Nian is reborn (still in the Old Friends arc)

Su Nian froze. She hadn't expected that after entrusting him to Uncle Qin to raise, in the hope that Feng Cheng wouldn't live as he had in his previous life, with her as his entire world, he would turn into a clingy little puppy who loved to act cute.

Su Nian collected herself. If his personality had changed, so be it. She had arranged it herself, and it was what she wanted. If they couldn't be husband and wife, they could be brothers. Ah, never mind. As long as he lived well, that was enough.

From the moment she first met Feng Cheng until the day she was stabbed with a sword, she never thought she had wronged him. Seeing him blame himself for the rest of his life, wandering the world and finally dying of illness in a foreign land, didn't hurt as much as the part about her father, but it remained deeply rooted in her heart, quietly reminding her from time to time: You were wrong. He liked you. He loved you. He blamed himself all his life.

P.S. 1. It's not very long. 2. Strong female and male leads, both are reborn in separate worlds. Please read with caution if that's not your thing. 3. The first arc focuses on their careers, with few details; the second focuses on their careers and everyday family life, with more detail. 4. I'm not sure how the palace intrigue and family power struggle tags got added. In any case, there shouldn't be much of either in the story.