All of them. Watched all of them. You should watch all of them. Comment reader, if you haven't seen the others, do so now. This series is amazing and has only gotten better as it has gone on. It touches you in a way that only a great story can. It makes you want to get up and do something with your life. Do not underestimate the potential of this seemingly simple animation. The only way it could be better is if when you started watching the episodes you gained a six pack and a life because this video series does literally everything else. It is so good that it got me to post a review. And i haven't done that in almost 7 years. What I am saying is that it is good. Watch it.