First strike

I didn't understand bani waited for veer to strike first and by drowning bani he kinda striked so why didn't bani use that to her advantage?

Good question. I think this is because Veer did not attack her like a Cheel. Also, Veer did not intend it seriously as an attack either. Just dunked her enough in the water to irk her and make his silly point.

Because she is falling in love with him maybe.

I get your point but he kinda did it with intention to hurt.

P.S I think this is mistake on writer part, because for someone who was waiting for opening, this one was perfect.

I am loving Naagin 5 but there are editing mistakes e.g in today's episode when bani went looking for jai. It seems it was part of yesterday episode which they forcefully fit in today's episode.

We cannot call it attack, veer didn't attack her, he was just irritating her that's it...

That was not a attack. Veer just warned her

I think it’s more to do while transforming into Cheel and then attacking. Being in human forms and hurting isn’t so impactful and it won’t consider an attack. 👍🏼

By attack you have to make an injury with inention

actually he was playing with her he did not hold her enough to struggle for breath is not he.