[Filling, unprecedented sensation, deep inside the womb...]

One day, Takagi, the president of a pharmaceutical company for births, was participating in a clinical trial for a new alpha-only drug.

When he returns to the office, he and his secretary, Ashihara, are working together in the president's office when suddenly Ashihara falls into a strong state of unknown cause.

While trying to prepare an emergency suppressant, Ashihara confesses that he is a special dominant alpha = sigma (Σ)...

In a deadlocked situation with no clear treatment due to the rarity of Sigma, Takagi makes an agonizing decision and offers a coping strategy: “Can you have sex with me, an alpha?"

The two have sex to calm Ashihara's aroused state, but something begins to happen to Takagi...?

A secretary x president, a bitching (gender mutation) omegaverse BL!