So many choices... BUT my absolutely favorite anime of all time, an anime that I can watch and rewatch again and again without feeling nauseated would be FULLMETAL ALCHEMIST BROTHERHOOD. My absolute favorite. No one can take FMAB'S place in my heart. No one. However, another favourite of mine is Violet Evergarden l, beautiful, sad, and tragic anime that I seriously love and also I also like Tanya: Saga of an Evil Girl (not sure about the title). That anime is hilarious and I love the plotline.