Any drama/series which has a reincarnation setting like avatar the last airbender. 

either of the two

  1.  A soul gets reincarnated many times. and last life they were a different gender , now this life another gender
  2. FL was a boy in previous life// ML was a girl in previous life

any drama like this? any language will do

can we count gender-bender? like ML getting into female lead body  and vice versa 

I dont know almost any reincarnation dramas with this type of trope only First Love Again but if you know you could share with us, i would love to watch it. But here are all i know and i have watched that ML is getting into female body and vice versa:

https://mydramalist.com/15958-please-come-back-mister

https://mydramalist.com/16159-go-princess-go

https://mydramalist.com/31984-great-men-academy

https://mydramalist.com/58365-queen-cheorin

https://mydramalist.com/714711-first-love-for-the-third-time

https://mydramalist.com/715899-cupid-s-last-wish

https://mydramalist.com/39661-love-and-redemption - this has it also FL was in first life male

Boku wa Mari no Naka - only body swap, but it is interesting drama.
Mr. Queen - I think this is about soul transfer to different genre, but I didn't see it.

 e8p3rt:

Are you aware of this thread? It has some lists you'd probably be interested in.

yeah mate im aware of this thread. because i made it  :')

Not exactly fitting but somewhat

https://mydramalist.com/27368-happy-birthday

FL is dead but posses the body of her younger brother and interacts with ML.