In this era of symbiosis between humans and monsters, humans still show their absolute control to the world. The status of the demon species has been eroded again and again. As a last resort, the demon royal family entered into a sub-marriage marriage with humans. As a result, they were hybrids of the jellyfish clan and had a very low status. However, because of their good looks, they were traded as male favorites...
Concept: Growth is mutual and there is no 100% dependence