This BL horror-thriller-mystery series is using the same plot as I Know What You Did Last Summer, only way longer. There's a huge mystery hidden until nearing the end of the series and there are a few plot twists along the whole series. I gotta say, this series contains so many toxicity. School mates bullying, marital spat, parental negligence, toxic parenting, relationship betrayal and last but not least, under-aged sexual activity. So much pain and suffering in one series, almost the exact opposite of your run-of-the-mill BL series. But that's life, and honestly, I prefer stories which are closer to reality. Cause it allows the audience to be able to relate to the series.
Most of the main casts were taken from the reality show "The Hidden Character", so as you can expect, the acting weren't that adequate for all actors. But some of them managed to do it decently. So you don't have to worry about horrendous acting. Give it a try.