Is loving anime characters and looking at them excessively considered forbidden and punishable, and is it possible to meet these characters in Paradise?

It is impermissible for a woman to look at a man who is not a mahram to her if she intends pleasure or fears fitna (temptation/strife). Similarly, it is impermissible to look at a photograph of someone whom it is forbidden to look at in reality, whether the photograph is of a real person or not. Therefore, if the questioner intends pleasure by this looking or fears fitna, it is not permissible for her to do so.