The Obscured Cage

The story of a guy being a little too reserved but treats his women as if she owns the whole universe, sounds dreamy right?
but what if the treatment she is getting, thinking of it as his Love and affection is just the beginning path of the cage she's going to be trapped in.

"H-How could you do this you monster! don't you have an heart"

"I do have a heart Little Rose, and that's you"
‧͙⁺˚*･༓☾‧͙⁺˚*･༓☾‧͙⁺˚*･༓☾‧͙⁺˚*･༓☾‧͙⁺˚*･༓☾‧͙⁺˚*･༓☾‧͙⁺
TROPES:
-Age gap
-Mature
-Slow burn
-Forbidden