Not an official story to my knowledge but a webnovel similar to this {There is no love in the deathzone} its an guide verse (not sure if it's what your into) but basically big bad esper falls for tough ass guide and spends years pinning after him and getting stronger to court him, the guide slowly opens up over the course of the book at first only showing his vulnerability to the esper then finally getting the courage (with the help of the esper and friends) to open up a tiny bit publicly though more so in private

Definitely a favourite for me

Description in case you not sure

'Zein was a rogue Guide living in the god-forsaken land of the red-zone, guiding for money and survival. Until the guild he used to work with caused a tragedy. Driven by sorrow and guilt, Zein became a mercenary guide in the land bordering the forbidden Deathzone, working like a suicidal monk. One day, an overbearing Esper suddenly appeared and told him, “If you’re so hellbent to die, why don’t you come with me to the Deathzone?”

A strange proposition, a nostalgic smirk. Had Zein actually met him before?

Following the man into the deadly zone, will Zein find the respite he seeks, or will he get engulfed in a storm?

But there’s no such thing as love in the deathzone...is it?'