@icarushector I know that, but atleast he can say he doesn't see her in romantic way or watsoever but has an option to be his sibling forever and give an illusion of being them living together forever to surpress that yandere side haha because honestly yandere imouto is a turn off.
He is supposed to be attractive and cool doing archery so maybe by getting serious he is an ikemen??
and also, maybe the goddess did also put a curse that he will be viewed as a monster by [hyuman]s only.