Who is the biwa demon?

Nakime (鳴女 Nakime) or the mysterious Biwa demon (琵琶鬼 Biwa Oni) is a Demon who lives in the Dimensional Infinity Fortress which Muzan Kibutsuji uses as his base of operations in the Kimetsu no Yaiba (Demon Slayer) series.

Did Muzan like Nakime?

Nakime was favoured highly by Muzan, due to her ability being very convenient.

What rank is Nakime?

Nakime is a demon who moves to the upper-rank four after the death of Hantengu. She lives in the Infinity Castle, and her primary job is to summon the demons to the castle under Muzan Kibutsuji’s command.

Who defeated Upper Moon 4?

After various battles within the Dimensional Infinity Fortress the remaining Upper Moons are killed by the hands of various Demon Slayers. The last member, Upper Moon Four Nakime, ends up being killed by Muzan Kibutsuji himself to stop the Dimensional Infinity Fortress from being controlled by his enemies.