When I first saw that Best Mistake was getting a spin-off, I was ecstatic about what it had installed for us, but also saddened this wasn't going to be a Season 3 of the infamous series. Despite this, it was an enjoyable watch for a web drama. Though it is not my favourite. This is a typical story about contractual relationships, high-school romance, crazy ex-boyfriends, idol trainee hardships, and jealousy within friendships.

The story starts off - like Best Mistake - with the female lead being in a sticky situation with a guy and having then to choose a random guy out of their school to pretend to be her boyfriend. It is just so that guy has a massive crush on her for a long time. If you have watched the original series, then the plot will come as no surprise to you. There have been added elements to the story that made it overall quite compelling. I particularly liked the exploration of the feelings behind a trainee being up against many others to make it to their debut. The relationship between the main characters was cute, though satisfactory overall as I did not feel the chemistry in the lead couple. The love triangle (or shall I say love square) was what intrigued me the most out of the whole drama due to the twist in the plot.
The drama itself is quite predictable, with a few hints of twists in the plot which took me by surprise. If I am comparing this to Best Mistake, I believe that this was more captivating than the original series with better execution than the second installment, as there is a lot more to explore in this series, such as the plots. On the other hand, with the cast, the feelings that are left with the viewers, and the overall story itself, Best Mistake is deemed as an irreplaceable series that no spin-off can ever do justice for like they did with the original series. This drama did not deliver much of the character's personal lives, unlike Best Mistake did, thus it made the whole story feel less personal, to me, and I could not connect with the characters as much.
Overall, the story was satisfactory. It is a typical drama about the lives of high schoolers painted in a somewhat unrealistic light. I would have loved if some of the outcomes in the characters differed from other dramas and for their to be a more personal feel to the characters individually, but with that being said, I found myself anticipate something good as each episode comes.

We see two idol-actor debuts, Kim Byeongkwan from A.C.E and Yuju from Cherry Bullet. I was thoroughly impressed with Yuju's acting as the character Han Na for her demonising and twisted feelings she has towards certain characters. Her role was quite fitting to her reality as an idol and ex-trainee, thus I felt like her portrayal as a trainee who is in desperate measures to make her debut was exceptional and realistic.
At first, I was not a big fan of Ba Ul due to his somewhat unnatural, over-exaggerated hyper and bubbly personality which made it difficult for me to watch him (seriously, I thought Byeongkwan's eyes were going to fall out by the end of the drama). But as the drama progressed, that toned down a little bit and we can see how much of a down-to-earth and soft character he is, especially to the ones he cares about. Kim Byeingkwan did an amazing job of his portrayal and I will surely be looking forward to future acting projects from him and Yuju in the future.
I believe there is a lead swap between Be My Boyfriend and Best Mistake. In B.M, Hyun Ho was the infamous, rebellious, and tenacious character he was known for, but here, it was Jina that took on the strong, yet soft female lead. I found her to have been quite admirable as the drama progressed
Seung Min, I found to be the indigenous and mature one which made this drama to be easy-flowing to watch. I loved the cast and the given opportunities for Byeongkwan and Yuju to make it in the acting scene

To conclude, if you are a fan of high school dramas and the Best Mistake series, then it is worth investing your time into this drama. If you also want to see Byeongkwan and Yuju's acting debut, then this is a good place to start. It is a nice drama to watch to breach the gap between the end of season 2 and theoretically speaking, the potential start of season 3.
I hope there will be a season 3 of Best Mistake happening soon