Canaan, No.6 Recommendations
Similar world in both shows (Not so much No. 6 itself but the west block strikes me as kinda similar to the village in Canaan)
Also there are a lot of yaoi undertones between Negumi and Shion in No. 6 which are kinda similar to the yuri undertones between... Every character in Canaan.
I think the settings and the quality of animation in both animes are kinda have similar feeling. And there are a lot of shonen-ai undertones between main characters which are similar to the shoujo-ai undertones in Canaan.