

Sister's Diary
2020, Korean. Directed by Kim Tae-soo.
Ga-eun and Su-ho grew up like brothers and sisters. However, Su-ho never showed that he likes Ga-eun ever since they were young. One day, Suho accidentally found Ga-eun's diary and found out that she also likes him. Su-ho reveals his feelings to Ga-eun. Ga-eun is not his real sibling, but to protect their parents, she rejects him...
- Runtime
- 1h 17m
- Post-credits
- None listed
- Language
- Korean
- Rated
- Check local
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Where to watch Sister's Diary
Sister's Diary isn’t streaming on any OTT platform in India yet; it released on 20 February 2020.
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Details
- Released
- 20 February 2020
- Original title
- 누나의 일기
- Country
- South Korea
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News & fan talk
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Sister's Diary: quick answers
Is Sister's Diary worth watching?
Sister's Diary doesn’t have enough ratings for a verdict yet.
How long is Sister's Diary?
Sister's Diary runs 77 minutes (1h 17m).
Does Sister's Diary have a post-credits scene?
None is listed for Sister's Diary. Viewers tag these on TMDB, so a brand-new film may not be tagged yet.
Sister's Diary parents guide: is it suitable for kids?
No age rating is listed for Sister's Diary yet.
Which OTT platform is Sister's Diary on?
Sister's Diary isn’t streaming on any OTT platform in India yet; it released on 20 February 2020. (Checked 10 November 2026.)
What movies are like Sister's Diary?
If you liked Sister's Diary, try Japanese Mom, A Time to Remember, The Matchmaker's Playbook.
Who directed Sister's Diary?
Sister's Diary (2020) was directed by Kim Tae-soo and stars Lee Sul-ah, Kim Ji-ah, Park Do-jin.