2girls, arknights, blush, book, brown_eyes, brown_hair, closed_mouth, glasses, hand_on_another's_hand, hand_on_another's_stomach, holding, holding_book, kimmy_tsunami, lying, midriff, multiple_girls, navel, on_back, on_bed, one_eye_closed, saria_(arknights), short_hair, shorts, silence_(arknights), spoken_x, sweatdrop, sweater, x, yuri