Kyousougiga S01 E09 Let's All Think About What We Can Do!

Inari is moved by Koto's desire to know the truth of the looking glass city, and starts to tell her the secrets of the universe. When he's done he stabs her with his sword. The others are shocked. Koto's Aratama explodes and the world is destroyed. Myoue confronts Kurama and Yase amidst the rubble. Myoue awakens as the true king of the city, and runs to stop the end of the world.