Nikosen was a sage before evil consumed his soul and transformed him into a demon. Konton orders him to kill the Half-Demon Princesses. Nikosen’s ambush catches Towa at a bad time, when her demon powers are fading and she is slowing turning into a human.
I think it got destroyed by 
a demon's poison.
.أعتقد أنّها تدمّرت بفعل سمّ شيطان
Wir glauben, das Gift eines Yōkai
ist dafür verantwortlich.
Creo que los destruyó
el veneno de un demonio.
Creo que fue el veneno de un demonio.
Pour moi,
c’est le poison d’un yôkai.
Pensiamo sia così per colpa del veleno di un demone.
Acho que foi destruído
pelo veneno de um youkai.
По-моему, всё убил демонический яд!