buy food till you get to the 2nd reward (anal), then when she arrives have sex with her for 5 real life minutes. she changes her dialogue after that. Repeat. Buy till you reach 2nd reward again and Rose replaces Momoko for that reward.
Viewing post in ROSE ANIMATION
It's not exactly 5 mins bro...... Ull get 3 different set of dialogues
1. Is while normally having sex with her
2. When the time in ur phone shows zero
3. Continue even after the time shows zero, then she's says she won't be coming back next time
TIP:-
HAVE SOME PATIENCE
DON'T CUM UNTILL SHE SAYS THE THIRD DIALOGUE