Why Hate Me for Seducing You? [GB]

An emotionally clueless genius researcher Beta heroine VS a handsome, tragic Major Alpha hero who's content to be a substitute

Jian Xiyan's best friend died.

She died in childbirth, giving birth to her child.

Her best friend's Alpha brother, a decorated war hero, said he would raise the child.

Jian Xiyan: Okay... Wait, you mean raise the child at my house?

Watching Gu Huaixu get up early every day to make breakfast, walk her to and from work, and teach the child to call her Mom, Jian Xiyan asked in confusion, "Don't you hate me?"

Gu Huaixu remained silent.

Jian Xiyan took that as confirmation. He was doing all this just for the child.

Later, someone told Jian Xiyan, "He's trying to seduce you."

Jian Xiyan: If he hates me, why is he trying to seduce me?

Gu Huaixu fell in love with the genius researcher from the Alliance who had saved his life.

But a pheromone disorder had turned him into an utterly ordinary Alpha. He wasn't worthy of her.

And his younger brother told him:

"Brother, an Alpha and a Beta have no future together."

"Besides, Xiyan has already agreed to be with me."

Heartbroken, Gu Huaixu requested a posting to the border.

When he returned, he was met with his younger brother's cold body.

Beneath his grief, he felt a shameful flicker of hope: perhaps he had a chance now.

But Jian Xiyan was drunk, and when she looked at his face, which bore some resemblance to his brother's, she called him by his brother's name.

Gu Huaixu's heart twisted with pain, and only one thought remained: He didn't care if he was a substitute. He wanted to have Jian Xiyan's child, too.

So he offered his body as Jian Xiyan's test subject, obediently letting her probe his cavity.

The dull ache in his cavity was nothing compared to the exhilaration in his mind. The proud Alpha major stroked the face of the Beta he loved with trembling hands, his voice humble and reverent: "I look a lot like him, don't I? Do you like it?"

Later:

Jian Xiyan watched the corners of Gu Huaixu's eyes redden as he struggled to hold back, while her hands continued to take samples without mercy. "Didn't you say your brother's child was your child, too? It's much harder for an Alpha to give birth than a Beta."

Gu Huaixu clutched the hem of Jian Xiyan's clothes, his knees so weak he could barely stay upright. His voice was restrained, yet unwilling to yield. "He can have your child. So can I."

· Extensive personal worldbuilding, including the idea that Alphas can give birth.

· It seems forbidden, but she really does take his place.

· A pseudo-substitute romance. The heroine and the younger brother are not involved; his feelings are one-sided, and he only said that to drive his older brother away.

· The heroine is an unfeeling genius at first, then a genius who falls in love with her test subject.

· Male pregnancy, but the heroine has no attachments. It's ABO, so naturally there's a way. Even an Alpha's powerful cavity is warm.

· Both leads are sexually inexperienced.

Theme: Perseverance brings success, and love brings hope.