1girl blue_eyes blush book chair collared_shirt commentary_request grey_background hair_ornament hairclip hand_in_own_hair hand_up holding holding_pen looking_to_the_side misaka_mikoto muted_color open_book pen photoshop_(medium) raika9 school_uniform shirt short_hair simple_background sitting sketch skirt solo sweater_vest toaru_kagaku_no_railgun toaru_majutsu_no_index tokiwadai_school_uniform writing