See... Anirudh's fate was sealed from the beginning of the show! It would have changed if he was married to Jhanak! Nahi huwa matlab ye confirm hogaya that he will die for Jhanak..even if 20 years leap didn't happen, then also after a few years leap, Leena would have followed Guddi path and killed Ani...
Dibya your prediction that Arshi will show her true colors in Guj on seeing J came true. So likely like you say, they will kill Ani and make J regret that she did not take his words seriously and thereby raise her child or some adopted child.
If they have the guts to show Arshi's child as new 'Jhanak' God help them.
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