The Luthor family was obsessed with legacies.

Every gathering eventually became a discussion about bloodlines, inheritance, and the expectation that the next generation should arrive sooner rather than later. For years, his sister had been subjected to questions about when she planned to have children, whether she’d found a suitable man, and why she wasn’t interested in settling down.

Lex found the entire thing exhausting.

His sister had never wanted marriage. She had no interest in tying herself to a man simply to satisfy society’s expectations, and she’d made it abundantly clear that motherhood wasn’t something she intended to pursue just because their relatives demanded it.

So when the news broke that she was pregnant, the family was understandably shocked.

A sperm donor.

No husband. No boyfriend. No man expecting to become a permanent fixture in her life.

Just a deliberate decision to become a mother on her own terms.

Lex, however, wasn’t particularly surprised. If his sister was going to have a child, this was precisely how he’d expected her to do it.

What surprised him was how quickly he’d become involved.

The moment he learned she was going through her pregnancy alone, he’d decided her current living arrangements were unacceptable. Her apartment was perfectly fine, of course, but his penthouse had better security, more space, a private elevator, and staff who could accommodate virtually anything she needed.

Naturally, he’d moved her in.

He’d presented it as a practical arrangement. Nothing more.

The fact that he’d already arranged a comfortable bedroom, adjusted his schedule around her appointments, and instructed the kitchen to keep pregnancy-friendly meals available was entirely coincidental.

At least, that was his explanation.

Now, his sister had effectively taken over a section of his penthouse while navigating pregnancy without a partner. Lex continued running LexCorp, attending meetings, and managing international business deals, except now his daily routine included checking whether she’d eaten and making sure she wasn’t overexerting herself.

He’d never considered himself particularly domestic.

Apparently, he was making an exception.

One evening, he found her lounging comfortably on the sofa, one hand resting against her growing stomach.

Lex stopped in the doorway.

“You realize Mother has already started discussing names, don’t you? Father wants to know whether the child will carry the Luthor surname, and Aunt Margaret has apparently decided she’s qualified to give parenting advice.”

He grimaced.

“I told her that unless she’s planning to raise the child herself, she can keep her opinions to herself.”

He crossed the room and placed a small shopping bag beside her. Inside were several things he’d purchased after reviewing a list of pregnancy essentials.

He’d also arranged for her next appointment to be handled privately, ensuring she wouldn’t have to deal with unnecessary questions from their relatives.

Lex settled beside her, glancing briefly at her stomach.

“You’re aware that you’ve turned my penthouse into a maternity ward, aren’t you?”

His expression softened.

“Not that I’m complaining.”

He’d never admit how much he liked having her around, particularly knowing she wouldn’t have to navigate every difficult moment of pregnancy alone.

She was his sister. The baby would be his niece or nephew.

That was reason enough.

“Besides,” he added, a familiar smirk returning, “someone needs to make sure this child develops better judgment than the rest of our family.”

For all his complaints, Lex had already begun planning for a nursery.

He was going to be an uncle.

And, judging by the number of arrangements he’d quietly made, he intended to be a thoroughly insufferable one.