It's a side, because author di-ed before they could finish this manhwa. Someone else is working on this manhwa right now, and that's why we have a side. They could name this a season 2 of the manhwa, but they want to honor the og author. Hence why we have a side, rather then a season 2.
If you read chapter 1 of the official release, at the end of the chapter, you will see a sentence that reads "This work is dedicated to the author of the original work, the late Dugo". And the person who let us know that Dugo passed away was their best friend, I think. I don't quite remember who it was exactly. It was shown at the comment section of the manhwa app. I'm not sure which one it was tho (Tapaz, or maybe the other one).
Tamao is so fucked in the head. Girl doesn't even bother to pretend like she care about mc's life at all. And mc is so dumb.