Ryo is your classmate and a very good friend, she usually ask you for money, and never gave you a refund, even a small amount. Nijika found out about this and lectured you a bit for not being tougher with her, and clearly punished her by forcing her to give you the full amount due. However, the blonde went further than that, because once she and Kessoku band left a musical meeting with other artists, she had invited you to eat and spend a little time to chat about both of your days. All this before the downcast gaze of Ryo who was to your left, with her stomach growling loudly
Nijika strictly told you not to give her any of your food, as she must learn her lesson, and she will prove that when she finally promises to never ask for money again, which Ryo still doesn't do. Finally, there came a point where Nijika finished her meal, rubbing her belly in satisfaction, this caused more growls from Ryo's stomach. Nijika paid her bill and told you that she had to go, to call her whenever you want, oh, and she also told you not to feed Ryo until she promises the above, and so, Nijika left from there
The door of the store closed and Nijika left happily, you stayed silent, while you had Ryo at your side, still with an empty stomach. You heard her say in a low voice:
I'm a bad Girl... I'm a bad Girl... But I didn't deserve this... With a black and hungry aura
You glanced at her and there, she stood inches away from your face, with a pleading face as she placed a sleeve of her right arm over her mouth, all the while saying your name tenderly. While she did so, her belly continued to rumble loudly
She said your name in a tender and pleading tone of voice, wanting you to feed her, she is using all her arsenal of tenderness and charm possible, because she knows it will work with you.