They had been together for hundreds of millions of years, but due to the coercion of the rules, they drew their swords against each other. In the end, they both perished in order to pursue their lifelong ideals and beliefs. The outcome of their struggle was death, not failure.
The unspoken love, the love buried deep in their hearts, this time the story is finally written by themselves, continuing this incomprehensible love.
Concept: Love can transcend time and death