VAni TS: Pal Pal Dil Ke Paas (Part 1)

This VAni TS is based on the promo in which Veeranshu let's Bani go...
What drove him to make such a decision in the first place...?
What would be Bani's decision...?will she stay back or would she leave Veer's life like she wanted...?
Who is this unknown entity who is after Bani and Veer...?
Will VAni be able to overcome their manipulations...?