Sodateno Uba wa Boku no mono

Since the day they met five years ago, Kaoru, the little boy, has been raised with great care and attention. At first, Kaoru was not very friendly to Amamiya, his nanny and maid, but their time together at the mansion passed slowly, and they lived an irreplaceable life together. "I shouldn't be doing this, but..." One day, Amamiya develops an uncontrollable urge. Kaoru, who has been enduring it for a long time, finally... The house is filled with memories, and she wants it everywhere.

(Source: FANZA, translated)

Note: A live-action AV adaptation (MUKC-065) was released on August 16th, 2024.