I worked in this project on Google colab python language using MTCNN. Which is a library built on top of TensorFlow that pre-trained model to detect humen faces in any images. I uploaded the output you can see the pink sequare detect the face correctly even it is Anime character. You can open the project by clicking in FaceDetection.ipynb file or use this link bellow.
https://colab.research.google.com/drive/1JRz980rVxpyoZVqbZqLddL5qXhyMwu5k?usp=sharing