Trying to read through comments for a DAMN explanation but seems like not a single soul ha...

1.Yeongdo got killed because Jiman framed him(?)
2.The step dad hired someone to kidnap his daughter, step mom payed triple like she said to keep her safe but I guess that didn't work out so she sent the dead body to the MC.Now, there is no explanation as to why this happened...I guess the dad and mom were just crazy and same goes with the kidnapper.She also mentioned that MC's mom asked her to adopt him...In the end she just burned the house with her and her husband inside.
3.Giju killed himself because he couldn't bear the death of his sister.He seemed to have figured out a grand plan against him but it was never explained (maybe it was paranoia since he has had some episodes where he kind of lost his mind).
4.Ara just wants to be famou so she does whatever it takes but Jiman tries to "save"her continuously.
5.Jiman's life sucked after the accident.
6.Giju's subconscious had taken the form of his mother.

thanks, i have read this comment before. What i mean is that even though we came up with ideas of what exactly happened, it is still too vague to say so, anyway i'm done with this webtoon. I just wished the author could have gone with a better interpretation of the events. It felt like reading a cluttered mind.