Rule 34 Dev - 1girl black_hair black_socks blue_sky chair chalkboard cloud day desk facing_away female_focus from_behind from_below grass hill kneehighs looking_up mocha_(cotton) moss on_desk original outdoors overgrown plant ruins sailor_collar scenery school_desk school_uniform serafuku short_hair short_sleeves signature sitting sky socks solo table technoheart vines wooden_floor|6127643925