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 heard that Nikosen used to be 
a sage a long time ago,
،سمعت أنّ نيكوسين كان حكيمًا فيما مضى
Nikosen soll vor langer Zeit
ein Eremit gewesen sein,
Dijeron que Nikosen
fue un sabio hace mucho,
Dicen que Nikosen solía ser un sabio,
Nikosen, c’est un ancien ermite
Ho sentito dire che Nikosen
un tempo era un eremita della montagna
Soube que, há muito tempo,
o Nikosen era um sábio,
Я слышала историю, 
как Никосэн стал демоном.