3girls, apron, aqua_eyes, black_hair, blush, book, bookshelf, breasts, brown_eyes, clothes_writing, crossover, fireworks, flying_sweatdrops, fujimiya_sumika_(isekai_ojisan), glasses, green_apron, hayasemaru-san, huge_breasts, idolmaster, idolmaster_shiny_colors, isekai_ojisan, kaeruyama_yoshitaka, large_breasts, long_hair, long_sleeves, looking_at_viewer, low_twintails, mitsumine_yuika, mole, mole_under_mouth, multiple_girls, night, open_mouth, outdoors, ponytail, red_eyes, shirt, short_hair, small_breasts, sweater, trait_connection, twintails, zeikin_de_katta_hon