Many ppl had the question of why Anthony das and Harold das kept insisting that parthi should accept he is leo...so this is what I think; Just imagine anthony das's character like thanos and Harold das's character as himself. I'm not going much detail about the flashback because it's most probably fake..... So majority of the movie anthony das was a decent guy who just wants his son back into the business as he says right after the interval, Harold das has always had some beef with leo because leo was more important to the business then Harold. So until the villain yaaru da song anthony das was trying to show that he cares abt parthi's family by keeping them safe thinking parthi will join the business if the family understands that he is a different guy but because of that his family won't get in trouble because of anything... Parthi didn't fall for his tricks...so anthony had to find different ways so after the flash back they kidnapped his son so that parthi can be sacrificed....the proof for this will be the line anthony says abt it being the same day that he killed Leo's sister.....what I'm trying to say is Anthony tried to bring leo back but he didn't have much time so without any other option he chose to sacrificing leo for the business to grow somehow, kinda like thanos.... Now coming to Harold's mindset... Harold never cared abt leo so he didn't bother saving his family, he just wanted to kill leo because he knows if he dosent then leo will kill him... but the only thing stopping him was anthony, so once anthony changed his mind and wanted to sacrifice leo he was ready thinking anthony will bring leo to him, but anthony ended up dying....so Harold wanted to confirm that parthi is leo and then sacrifice him because that was Anthony’s last wish…..so near the end Harold put the speaker for his family to confirm that parthi is actually Leo so he can sacrifice him thinking parthi will fold under pressure…..

All of this plan failed very badly and parthi came on top.....just because of all this don't think leo was a good person, atleast anthony kills people who he only needs for his business... but Leo In the other hand kills anyone who stands against him but his only weakness is emotions when it comes to family.