The Demon King is invincible, adored by fangirls everywhere, and loves maids, yet prefers to live in seclusion. One morning, he encounters an elf saintess who won't preach doctrine or spread the gospel, and whose every thought is focused on making him hers!
Bound by a promise, he must train this scheming saintess to become a god-tier powerhouse feared by all!
So here's the question: over the course of their long companionship, will the Demon King be the first to fall for the saintess, or will she defeat all her rivals and win the Demon King for herself?
Wait! Don't those outcomes seem pretty much the same?
How about adding one more thing: let the little saintess and all her fangirls melt in the Demon King's tender embrace?
Sounds good!
