Recommendations MC and ML are from opposing sides or races

Hi! Im looking for novels where the MC and ML are from opposing sides like if they are from enemy countries, or if they are opposing races such as zerg and human, or something similar.

BG or BL is okay
QT is also okay

 

Adonis

 

It happens into many arcs of Everyone Knows I'm a Good Person (BL)

 

Child of Light
In a sense Douluo Dalu 1 & 3

 

BL tag me Pls

 

Romeo and juliet

 

Kimi to Boku no Saigo no Senjo, Aruiha Sekai ga Hajimaru Seisen

 

Living to Suffer if you don't mind BL with a lot of smut

 

The enemy always wants to pull me into the coffin
MC is a Vampire and ML is a Saint

 

Nurturing the hero to avoid death
The Show must go on
By the summary, I would say those fit the bill.