The neighborhood knows Manami, an attractive and wealthy mature woman.
Tragically Manami lost her husband to illness. Naoko, her aunt, often visits her so that she won't be alone in the mansion.
Neither of them have children and both of them are in their prime.
Seiya has known Manami since he was a boy. Now he's college-aged...

* A Milf x Hypnosis ADV for your enjoyment *

[From DLsite English]