:d absurdres angel_wings arm_support astraea blackboard blonde_hair blush breasts chalkboard female green_panties highres indoors long_hair looking_at_viewer lying on_side open_mouth panties pantyshot plaid plaid_skirt red_eyes ribbon school_uniform schoolgirl serafuku shirt skirt skirt_lift smile solo sora_no_otoshimono thighs underwear wings wink