I'm currently enjoying so much my watch of the taiwanese BL series "Kiseki: Dear to Me" that I was compelled to watch this side episode of 20 minutes centred on the story of Zhang Teng. He is the weakest part of the origin drama, so I was hoping that this special episode would allow some development and nuance regarding this character and his "villain" arc.

Unfortunately, this special episode did not exactly meet my expectations...It is totally dispensable and it did not make me be more convinced by the character of Zhang Teng. I kept also being unconvinced by the performance of the actor playing that part. He is for me the weakest point of the cast but I must admit that the script and filmmaking are particularly cheesy when relating to him and that the issue might be more relating to storytelling than to the acting.

I would recommend this to people that like the main series. It is totally dispensable and you will not miss anything by skipping this. But still, if you are finding yourself wanting more from those characters and their universe, it is a relatively satisfaying watch (despite the repetitive aspect of of some scenes). To be noted, this side episode should be watched after viewing episode 8 of the origin series.