Apparently Blood isn’t important in Ainu society, if you live in Ainu way and feel belong to them, you are Ainu. Kiroranke is an Ainu name, lived in Hokkaido as Ainu with Ainu family, following Ainu style of living so he is Ainu enough. I found it a bit insensible to state he isn’t Ainu.
Also...
With Japanese audience sugimoto’s confession was controversial, some think it is a beautiful thing that Asirpa is like a goddess to him, others think it’s dangerous because it’s showing his madness by overlapping with Anehata’s line and Hanazawa’s idol theory, how he is messed up that he has to...