His sukoon : His junoon

"You don't understand, Rana Sa, we are not made for each other." Her eyes held tears of helplessness as she tried to make the man in front of her understand.

""Whether you believe it or not, you are mine and I won't let you go, no matter what you say."
He gently leaned forward, touching their foreheads together before placing a kiss on her forehead.

Isha Mishra
An introvert and calm girl pursuing her masters in psychology
Rudransh Singh Rajput
A man not to be messed with, a man with authority, power and dominance.

It's a story of them, the story of the king and his queen.
(If you need translation for the Hindi sentences please do ask)

Tropes
Royal x his queen
obsession
Opposites Attract
Passionate love
ML is obsessed with FL with capital 'OBSESSED'

(Mention of BTS if they trigger you please do not read this book)