1girl 1girl bespectacled big_breasts breasts chalk chalkboard cleavage dated english_text fang high_resolution holding_chalk hololive horns kiryuu_coco looking_at_viewer megane orange_hair red_eyes reku_hisui text virtual_youtuber  1girl 1girl big_breasts breasts chalk chalkboard cleavage dated english_text fang high_resolution holding_chalk hololive horns kiryuu_coco looking_at_viewer orange_hair red_eyes reku_hisui text virtual_youtuber