とある熟女の変態調教～老いてなお滴る秘蜜と悦楽～（Toaru Jukujo no Hentai Choukyou ~Oite nao Shitataru Himitsu to Etsuraku~）

――The place I once was. The scenery I once saw.

A certain mansion. An exhilarating sight spread out before me. At that time, I couldn't understand it, but it was strongly and vividly etched into my mind.

White skin illuminated by dim light. The body adorned with ropes, patterns like blotches appearing on it.

――She was a beautiful person. A beautiful naked body. And then, a few weeks later. I suddenly had to leave this town. Without having time to understand what I had seen, I sealed the memory away and was swept away by the waves of a new life...

More than ten years have passed since then.

I was going to that mansion again. A woman's sobbing voice. The muffled voice could be heard coming from deep within the mansion. A strange sense of déjà vu captured my consciousness. This feeling, I’ve had a similar memory... somewhere... sometime...

The voice came from a hallway on the side. Behind the slightly opened sliding door, the owner of the voice... I tiptoed, as if drawn by the sound, heading toward it.