Seri ini dibuka dengan pembunuhan seorang ibu yang dilakukan selama proses perceraian orang tua dan semua anggota keluarga Lee dan keluarga besar dicurigai melakukan pembunuhan. Seiring waktu, seri ini menceritakan kisah lucu yang menegangkan setelah terjadinya pembunuhan.
Melalui seri ini Yoon Joo-sang merayakan 50 tahun debutnya.[6] Dia bersama Go Won-hee, Hwang Geum-hee, Song Young-jae, dan Kim Na-yoon mendapat kesempatan untuk berkumpul lagi setelah seri televisi tahun 2015 The Stars Are Shining. Daftar pemeran dikonfirmasi pada Desember 2020.[7]
^Episode pada 17 April dan 18 April 2021 tidak akan ditayangkan karena karantina mandiri anggota pemeran yang melakukan kontak dengan kasus COVID-19 yang dikonfirmasi. Episode khusus yang berisi alur cerita hingga episode 20 akan ditayangkan sebagai penggantinya.[26]
^Episode drama ini tidak akan ditayangkan dua kali pada hari Sabtu tanggal 24 dan 31 Juli. Episode tersebut akan ditayangkan pada hari Minggu tanggal 25 Juli setelah siaran Olimpiade Musim Panas 2020 yang berakhir pada pukul 22.00 WSK.[27]
^Siaran yang dibatalkan karena Olimpiade Musim Panas 2020 dilanjutkan pada 7 Agustus.[28]
^Karena beberapa peringkat tidak dicatat, peringkat rata-rata pastinya tidak diketahui.
^Kim So-yeon (February 9, 2021). "'오케이 광자매' 홍은희·전혜빈·고원희, 문영남 신화 스타트" ['Okay photo sisters' Hong Eun-hee, Jeon Hye-bin, Ko Won-hee, and Moon Young-nam Shinhwa start]. Hankyung (dalam bahasa Korea). Diakses tanggal February 21, 2021.
^Lim Soo-bin (February 9, 2021). "KBS2 새 주말극 '오케이 광자매' 희로애락 인생사 담긴 1차 티저 공개" [KBS2's new weekend play'Okay Photo Sisters' 1st teaser that contains the joys, sorrows, and life history]. Seoul Economic Daily (dalam bahasa Korea). Diakses tanggal February 21, 2021.
^ abKim Yang-soo (November 26, 2020). 하재숙, 드라마 '오케이 광자매' 합류...'新캐릭터 예고' [[Exclusive] '50 Years of Debut' Yun Joo-sang, first lead drama in 'Pleasant People's House']. Joy News 24 (dalam bahasa Korea). Diakses tanggal February 21, 2021.
^ abPark Pan-seok (December 29, 2020). "'오케이광자매' 홍은희X전혜빈X고원희X김경남, 대세 캐스팅 확정..환상의 라인업[공식]" ['Okay Gwang Sisters' Hong Eun-hee X Jeon Hye-bin X Go Won-hee X Kim Gyeong-nam, the main cast confirmed.. Fantastic lineup [Official]]. Chosun (dalam bahasa Korea). Diakses tanggal February 21, 2021.
^"고원희, "범상치 않은 막내딸 납시오!" (오케이 광자매)" [Gowon-hee, "Please give me the extraordinary youngest daughter!" (Okay photon sister)]. KBS (dalam bahasa Korea). February 16, 2021. Diakses tanggal February 21, 2021.
^Kim Jung-eun (January 14, 2021). 하재숙, 드라마 '오케이 광자매' 합류...'新캐릭터 예고' [Jae-sook Ha joins the drama'Okay Light Sister'...'New Character Notice']. Hankook Ilbo (dalam bahasa Korea). Diakses tanggal February 21, 2021.
^Jeong Han-byul (March 9, 2021). "백승희, '오케이 광자매' 특별출연...감초 활약 예고`" [Baek Seung-hee,'Okay Photonic Sister' special appearance... Licorice activity notice]. One Star (dalam bahasa Korea). Naver. Diakses tanggal March 9, 2021.
^ abcKim Kyung-hee (June 18, 2021). "오케이 광자매' 31%돌파 기념 샘해밍턴-윌리엄-벤틀리, 특별출연" [Sam Hammington-William-Bentley, Special Appearance in 'Ok Photo Sisters' 31% Breakthrough]. iMBC (dalam bahasa Korea). Naver. Diakses tanggal June 18, 2021.
^Bae Hyo-joo (September 19, 2021). "김이서 '광자매' 마지막회 깜짝 등장 "잠깐이지만 즐거운 경험" [Kim Yi-seo makes a surprise appearance in the last episode of 'Kwang Sisters' "It's a brief but enjoyable experience]. Newsen (dalam bahasa Korea). Diakses tanggal September 19, 2021 – via Naver.
^"오케이 광자매 OST Part.1" [Revolutionary Sisters OST Part.1]. Bugs!. Diakses tanggal 21 April 2021.
^"오케이 광자매 OST Part.2" [Revolutionary Sisters OST Part.2]. Melon. Diakses tanggal 2 May 2021.
^"오케이 광자매 OST Part.3" [Revolutionary Sisters OST Part.3]. Melon. Diakses tanggal May 3, 2021.
^"오케이 광자매 OST Part.4" [Revolutionary Sisters OST Part.4]. Melon. Diakses tanggal May 19, 2021.
^"오케이 광자매 OST Part.5" [Revolutionary Sisters OST Part.5]. Melon. Diakses tanggal June 13, 2021.
^"오케이 광자매 OST Part.6" [Revolutionary Sisters OST Part.6]. Melon. Diakses tanggal June 19, 2021.
^"오케이 광자매 OST Part.7" [Revolutionary Sisters OST Part.7]. Melon. Diakses tanggal July 11, 2021.
^"오케이 광자매 OST Part.8" [Revolutionary Sisters OST Part.8]. Melon. Diakses tanggal July 31, 2021.
^"오케이 광자매 OST Part.9" [Revolutionary Sisters OST Part.9]. Melon. Diakses tanggal August 22, 2021.
^Moon Ji-yeon (August 22, 2021). "[공식] 김경남, '오케이 광자매' OST '오키도키야' 발매" [[Official] Kyungnam Kim, 'Ok Kwang Sisters' OST 'Oki Dokiya' Released]. Sports Chosun (dalam bahasa Korea). Naver. Diakses tanggal August 22, 2021.
^Ahn Eun-jae (April 13, 2021). "KBS '오케이 광자매' 코로나19 밀접 접촉 "17·18일 스페셜 편성"[전문]" [KBS'Okay Photo Sisters' Close Contact with Corona 19 "Special schedule on the 17th and 18th" [Full text]]. Sports Seoul (dalam bahasa Korea). Naver. Diakses tanggal April 14, 2021.
^Ahn Eun-jae (July 22, 2021). KBS, 올림픽 중계에 집중…드라마 줄줄이 결방[공식] [KBS to focus on Olympic broadcasting... Dramas canceled one after another [Official]]. Sports Seoul. Naver. Diakses tanggal July 23, 2021.
^Lee Min-ji (August 6, 2021). ‘오케이 광자매’ 올림픽 결방 끝, 7일부터 방송재개(공식) ['Okay Kwangsisters' Olympics to be canceled, broadcast resumes from the 7th (official)]. Newsen. Naver. Diakses tanggal August 6, 2021.
^Ahn Yun-ji (October 21, 2021). "영탁, OST상 수상 "큰 상 받아 영광..감회 남달라"[서울드라마어워즈]" [Young Tak, OST Award Winner "It's an honor to receive a big award.. I have a lot of emotion" [Seoul Drama Awards]]. Star News (dalam bahasa Korea). Naver. Diakses tanggal October 21, 2021.