To be honest, I enjoyed the entire series. I'm not sure why people are so offended by the ending. Why can't people cherish and appreciate both happy and sad endings? Life is always bittersweet. So don't expect this drama to be all epic and happy.

Twenty-five Twenty-one is a coming-of-age drama that follows the journey of the female lead, Na Hee Do, from a regular fencing athlete to South Korea's "Fencing Queen." This drama began the story of Na Hee Do from a unique perspective: that of her daughter, Kim Min Chae, in the present day, who begins reading her mother's diary, which He Doo wrote when she was younger.

Though romance is one of the drama's genres, it is absolutely not the main theme. It's about friendship, youth, and passion. This drama explains why these are significant and why we should treasure them. The five member squard of Na He Do (Kim Tae Ri), Baek Ye Jin (Nam Joo Hyuk), Go Yu Rim (Bona), Moon Ji Woong (Choi Hyun Wook), and Ji Seung Wan (Lee Joo Myung) was phenomenal, and I enjoyed each of their personalities in their own way.

In my opinion, Na Hee Do's character was the best of the five, and I believe most viewers of this drama will also agree with me. She rose from irrelevance to become one of the most recognisable names in the fencing industry thanks to her fighting spirit and perseverance. She is strong, brave, and full of energy and passion, which are all the qualities I like in a female lead. I like to see female leads who change their world rather than being changed by it and the circumstances that surroundes them. Hee Do is prepared to go to any length to ensure that she and those around her have a better future. She is not afraid to express herself, not even to confess her feelings to the one she loves, and she fights for what she believes in. He Doo's character is one of the best I've seen in a long time.

After that, there's Baek Ye Jin. During the IMF crisis, his family was forced to split up. He was in distress because of not finding any job and wanted to reuniting his family soon. He, too, was persistent, but in a different way that caused him to crumble easily. That is, until He Doo came into his life. Because of her liveliness, he learned to treasure and enjoy his life. He became more optimistic about life and more confident in dealing with any situation. Although he still had the fragile part of himself, He Doo made him a happier young man, and he eventually fell in love with He Doo.

Go Yu Rim was the most famous fencing athlete until He Doo appeared, and she was the one He Doo idolised. She came from a poor family and was also a friend of Ye Jin's. Although Hee Do and Yu Rim initially despised each other, they developed a rivalry that was stronger than any hatred because they loved and respected each other. She and He Doo have a love-hate relationship, but they also have one of the strongest friendships.

The characters of Moon Ji Woong and Ji Seung Wan felt like a breath of fresh air to me. They were incredible in their own way. Ji Woong was the most popular boy in the class, with a crush on Yu Rim, and Seung Wan was the class monitor, who was always at the top. They were childhood friends with a good reputation in their class. These characters' presence did not feel extraneous or unnecessary (which would have been if the storyline was not this beautiful).

What made all these characters more and more memorable were their choices. As the Harry Potter quote goes, "It is our choices that show what we truly are, far more than our abilities."

The actors did an excellent job of bringing the characters to life. Kim Tae Ri was fantastic. I couldn't believe she was over 30 years old. She was perfect in the role of He Doo. She not only looked like a teen, but she also acted like one. Nam Joo Hyuk's acting was incredible. Despite the fact that he was younger than Tae Ri, the two had great chemistry on screen. They won many people's hearts, including mine.

Bona, Choi Hyun Wook, and Lee Joo Myung were also outstanding. They were excellent in their roles, making us laugh as well as cry. Of course, Kim Hye Eun as Yang Chan Mi, the fencing coach, and Seo Jae Hee as Shin Jae Kyung, He Doo's mother, deserve special mention. Without them, the drama would have felt incomplete. They did an excellent job portraying their characters and fitting them into the story.

When it comes to the plot, I enjoyed the fencing theme as well as the story's pace. It wasn't too quick or too slow. It was perfect. The drama explored various emotions while maintaining the suspense for its climax. The drama really did have some problems when it neared the end, which was mostly because of the screenwriting, I guess.

The first issue was that the drama, which had been so upbeat and optimistic until the 14th episode, abruptly turned negative and hinted at ending on a sad note (and so did it). Some audiences found this difficult to accept, and as a result, they deducted points from their ratings. Also, in the last two episodes, the characters felt a little disconnected from themselves, as if they weren't their true selves.

The second was that by not introducing some characters, such as Kim Min Chae's father, and this made some characters, particularly the older Na He Doo and Kim Min Chae herself, feel out of place and unnecessary. Furthermore, they could have ended the drama on a happier note by showing that He Doo and Ye Jin were happy and had moved on from their breakup. Even if the leads did not end up together, there would have been no problem for the audience. Any way, let bygones are bygones. Personally, I liked the ending and appreciate the fact that it wasn't a fairy-tale ending.

This drama had really good OSTs that evoked the audience's emotions and brought a 90s vibe into the presence. There are nine tracks in total, and nearly all of them have a very passionate, nostalgic, yet profound feeling:
"Starlight" (스타라이트) by Taeil (NCT)
"I'll Shine on You to Dazzle" (눈이 부시도록 너를 비춰줄게) by Bae Ki-sung
"Very, Slowly" (아주, 천천히) by BIBI
"Your Existence" (존재만으로) by Wonstein
"Go!" by DK (Seventeen)
"Stardust Love Song" by Jihyo (Twice)
"With" by Kim Tae Ri, Nam Joo Hyuk, Bona, Choi Hyun Wook, Lee Joo Myung
"Free" (가보자) by Xydo
"Your World" (너의 세상) by Seol Hoseung (SURL)

"With" and "Starlight" are my personal favourites.

Finally, I would recommend this drama to anyone looking for a good youth rom-com with a strong FL and an excellent depiction of friendship. However, if you believe that the ending is the most important aspect of a drama or if you dislike sad or bittersweet endings, this drama is not for you. I thoroughly enjoyed this series and would gladly rewatch it at some point of time.