Risa is a horrible person! People that resort to trickery and constant pressure to get what they want and then tell you they love you are borderline psychopaths. As well as saying things that are hurtful and laughing about at the other person's expense and laughing about it are psychopathic.
In the USA at least and in many Asian manga and anime shows its seems to be funny to audiences to make fun of another person, laughing it as hilarious, esepically if it eventually gets the tEason what they want. Then the person constantly harassed is made to look as though they are overreacting. Of course occasional teasing shouldn't cause harm, but if a person says it does it should stop immediately. It is no wonder that adults and kids here in the USA, at least, think it's the greatest thing since bread, to laugh at another's expense. These kind of things can cause depression and suicides irl. I just think it is way overdone in today's media.