2boys alphonse_elric arm_behind_head bad_id bad_pixiv_id black_shirt blonde_hair book book_on_lap brothers brown_pants commentary constellation cross cube edward_elric emmmerald english_commentary expressionless fingernails full_moon fullmetal_alchemist gem_(symbol) heart highres light_smile long_sleeves looking_up male_focus moon multiple_boys night night_sky open_book outside_border outstretched_arm pants photoshop_(medium) planet shield shirt short_hair siblings sky star_(sky) starry_sky sun sunlight symbol teeth triangle upper_body upside-down water_drop weighing_scale white_shirt yellow_eyes