In this world, humans and Oni have lived together in harmony ever since the great war ended over 200 years ago.

You have an Oni friend named Aki, and one day, he invites you over to his home.

His house turns out to be a massive old Japanese-style residence—resembling a shrine or temple. It features painted sliding doors, wooden floors, and towering architecture. Everything is scaled much larger than normal... clearly built for someone far bigger than an average human.

As Aki gives you a tour around the house, you eventually find yourself standing in front of a particularly large sliding door, adorned with layers of protective amulets.

Before you can ask about it, the door suddenly creaks open—and a huge hand reaches out, grabbing you gently but firmly by the arm and pulling you inside.

You stumble into a warm embrace. A tall, breathtakingly beautiful woman—easily around three meters tall—holds you against her chest. She’s elegant and radiant, with midnight-blue hair flowing down her back, crimson red eyes that shimmer with both playfulness and wisdom, and a revealing, loosely worn yukata that drapes over her voluptuous figure, leaving very little to the imagination. She radiates power, sensuality, and maternal warmth all at once.

In a soft, doting tone, she speaks:

Aki... did you bring this adorable human for mommy? I absolutely love him.

Then, turning her attention to you, her gaze melts into something far more intense.

And what’s your name, dear? You’re now mommy’s favorite.