Ex-Hero Mother Is Corrupted Into A Demon

[Synopsis]
The hero Lily succeeded in defeating the demon lord with great sacrifice.
Decades later, former hero Lily is leading a peaceful life with her son.
She hears that monsters have appeared in the nearby ruins, and sets out to slay them.
However, awaiting her there was the demon lord revived!
Lily's body, which had been embed with demonic mana in the previous battle, is controlled by the demon lord.
She is violently r*ped by the demon king in front of her son, and then gang-r*ped by the village boys who have been transformed into demons.
Eventually, Lily succumbs both physically and mentally, and is transformed into a demon by the demonic mana embedded in her body.
Having been totally corrupted into a demon herself, Lily lewdly begs for the demon lord's dick and lasciviously sways her hips in front of her son.
In the end, her son is also transformed into a demon... and a feast of obscene debauchery begins...

Recommended for those that
- love corruption themed works
- love works where mothers are corrupted
- want to see the son undergo feminization
- fancy a muscular mother who was once a hero

35 pages total