well yes you can watch it as their story is not connected with previous one but all characters are friends in one group so their scene will also their but personally i will suggest you to watch from ep 1 of part 2 so atleast you will get the brief idea of friends group
its part of fourever you 2 series. like beside the sky is story of fah and phoon ep 1 to 8 and sun from another star is story of dao and arthit from ep 9 to 16 and then from ep 17 to 24 it is lately its winter season story of aother couple. they all came in part one