Secret Brothel and NTRed Hero v.1.2 uncut

The Demon Lord has been defeated.
After 20 generations of Heroes,
the current Hero Noa has finally defeated the Demon Lord who reigned the land and bring peace to the kingdom......

But forget about that, this is the story of Rika, the hero's lover...,
now his ex, running away from her sadness and finding herself wandering in an unnamed city with no money and place to live.
She finds the Master of a bar and applies herself as the barmaid.
Little did she know that the owner also run the secret brothel for regulars and VIPs only...
You are the Master (Finch), a retired adventurer who own multiple entertainment business.
In this time the Hero carelessly establishes a dumb law in the kingdom to prevent perverted acts to happen.
Seeing a loophole so big in that law the corrupted government uses it to suck money from the owner of the red light entertainment business.

Fate encounters Finch and Hero's ex-lover, with this maybe Finch could arrange an act of revenge on the naive hero?
maybe... a cuckolding (NTR) plan would be perfect for this...?