~Nyikara Ending's Walkthrough:

To get Nyikara's ending, you have to get equal pandawa point.
Here's the hint:

-day1 : I don't involved fight, says everything will be alright
-day2 : I will look for food in my room, puntadewa is more interesting than kitchen, keep calm, like I care
-day3 : Talk about weather, he's telling me the truth
-day4 : Talk about surroundings, something bad, ask Sadewa's relationship with nyikara, Maybe if I ask him nicely
-day5 : I'm still scared, Keep the special mission hidden, ask Werkudara's relationship with nyikara, It's none of my bussiness
-day6 : I will hide myself, Pretend that he was lying, ask Arjuna's relationship with nyikara.
-day7 : Follow him, ask Nakula's relationship with nyikara
-day8 : Have some random talk first, ask sadewa's relationship with nyikara, I cannot tell him the truth.
-day9 : Talk to Sadewa

Basically, the hint above will make Nakula&Sadewa poin being equal. 
I hope it will work!