I'm an Evil Demon King, Why Are You Clinging to Me?

Ling Yu was the strongest Demon King.

He unified the demon clans and signed a peace treaty with humanity.

He even deliberately spread rumors that the Demon King was utterly evil and committed every kind of atrocity,

to stop humanity from invading the demon clans in force.

But then Ling Yu discovered something.

A ditzy elf, a female adventurer, a big sis...

Why did every last one of them, whether human girls or demon girls,

keep clinging to him?!