[Demon Slayer] Becoming Muzan Kibutsuji’s One True Love

A hundred-year-old Kaguya-hime.

She is the forbidden person whose touch is strictly off-limits, her name flowing through the blood of countless demons.

Legend has it that the demons' progenitor hid the fabled Kaguya-hime away, and she awakens once every hundred years.

Whenever Kaguya-hime awakens, it is when that great one's mood is at its very best and very worst.

In the princess's presence, that great one tolerates every mistake and generously grants his subordinates blood to make them stronger, allowing the demons to guard the princess all night long... Of course, even the closest of them are still several mountains away.

Anyone who dares get too close to the princess has their brain crushed by the progenitor without exception. He deals with demons even before the Demon Slayer Corps can.

The progenitor's vile nature is on full display whenever the princess isn't looking... Their once-in-a-century meeting makes his agitation at being separated reach its peak, and he has to keep slaughtering demons to maintain his composure in front of the princess.

Why doesn't he slaughter humans?

Naturally, it's because the princess is human. While she is awake, the progenitor will not kill anyone.

After all, there are demons to spare. Even if they were all killed, more could be raised in no time.

All he has to do is turn humans into demons...

Theme: Good deeds bring good results, and evil deeds bring bad results