Takuji-jou no Orbale

This is the Demon King’s Castle!!
The Demon King Orbeil has been spending his days in laid-back fashion with his monster underlings—when one day, a hero suddenly shows up and leaves his daughter behind! Her name is Sasha!
“Why must I babysit the daughter of my hated enemy, the hero!?” Though Orbeil reluctantly agrees, the energetic Sasha throws the Demon King’s Castle into total chaos.
A slapstick home comedy set in the Demon King’s Castle, starring the “hero’s daughter” and the “demon king and his minions,” begins!!

(Source: Pocket Magazine, translated)