He is the head of the Kuchiki clan, the head of the four great nobles in Soul Society.
She is a demon from another world.
When they met unexpectedly, her heart fell on the iceberg-like head of the Kuchiki family, but he had a gentle and lovely wife.
However, the red thread of fate had already connected the two of them. After a great change, his wife passed away...
Different worlds, different races, obstacles from unknown forces, where will the people on both sides of the red line end up...