1girl angel_wings armor astraea_(sora_no_otoshimono) breasts center_opening chain cleavage collar dress expressionless feather_hair_ornament feathers full_body grass hair_ornament highres innerboob large_breasts long_hair low-tied_long_hair monochrome navel pencil_dress shoulder_armor solo sora_no_otoshimono standing very_long_hair watanabe_yoshihiro wings