Post 1.
Concur it is N. kurava male.
Post 2.
1 is N. berenice female /Upperside pale blue.
2. is a bit dificult.
It could be N. calauria as the submarginal spots 4 & 5 are pointed on both wings.
An upperside shot may help.
The variation in N. calauria here is not known.
Tentatively I will leave it as N. berenice female.
TL Seow:Cheers.