First, as stated in a headline, if you searching for your 1st BL series, TharnType the Series (TTS) is not yours. Really, you will feel uncomfortable especially for several early episodes. I'm start in 2017 with 2 Moons The Series, then step up with Love by Chance (LBC) 2018 and in between, several Thais, Taiwanese and Chinese series. Still, when watch TTS, early episodes just harsh and make me feel so heavy. But, it will be better when you keep progress. TTS is 'spicy' but 'colourful' series, just if you used for something mild only, this is not something you should watch. Do not expect just lovey-dovey or light conflicts here.
Chemistry between characters is the strongest point of this series. When I'm enjoying watching my previous series, I didn't understand why some keep says that the chemistry between characters is lack. Not easy to define but TTS will show clearly to every viewers, what chemistry it is. Every eye contact, expression of feelings, or even kissing or something equivalent are really well executed, just like they are real.
For weakest point, I think about fast paced timeline. Without explanation from here, IG and Twitter, it's hard to understand. Sometimes, just think that the next scene just happen immediately after previous scene or just next day, but actually it happen after several days or weeks. Just feel so sudden. Really need for extra information to understand better. But, this also can be good as the storyline keep fast, so no stagnation in storytelling that can make viewers feel boring.
As conclusion, TTS is really good series if you seek something balance from every aspect.