To Be Hero is a very interesting anime. A lot of people will be turned off from this show because of the flavor of the humor, the extremely weird/out there plot/premise, and the unattractiveness of many of the character designs. I truly believe there's something special here though.
Even though this show is a comedy, and I would agree comedy is the best genre to put it in, the comedy is not the reason I think so highly of this show and the comedy is not the reason I would recommend this show. You will know pretty quickly if the humor in this show is for you or not, however it's hard to nail down what's good about the humor because the reasons I'm sure some people dislike the humor are the same reasons some people like the humor.
The art, sound, and animation in this show are all great, not incredible or otherwise mindblowing or outsanding, but defintely great. Every character's design is unique, the animation is never low quality (in fact there's some very high quality animation at the end of the show), and the music fits everything perfectly although no one track besides maybe the ending theme really stands out or is overly memorable.
The story and characters are the highlight of this show, and are the reason I enjoyed it so much I'm sitting here still thinking about the show and writing a review for it days after finishing it. While the plot can be hard to follow at times, it is never so out there that you can't follow it. The story is a lot more about Ossan's relationship with and protection of his daughter than the synopsis would have you believe. Underneath the humor is a great story about a father and his daughter and the interesting people around them every day. The main cast in this show all do a great job of making you care about them. I never thought I'd care so much about a creepy pervert neighbor or a computer alien that has access to all the knowledge in the universe. I was always on Ossan's side and wanted to see him succeed in everything he attempted, I wanted Min-chan to be happy, i wanted the alien prince to be happy, I liked everyone a ton and even in all the absurdity the show made sure everyone in the main cast developed and were believable in their actions.
As I end off this review, I should say that the number 1 thing this show did right and that it does better than almost any other anime is endings. The end of almost every episode was a very well done cliffhanger that both made you really want to see what was going to happen next and was immediately resolved/addressed next episode. The ending of the entire show was fantastic as well, everything wrapped up in a way that was satisfying and really concluded the story. The final episodes of this show reminded me a lot of why I like anime, and the ending tied everything up perfectly in my eyes.
If you've read everything up to now you might have forgotten this show was a comedy for a split second during my gushing, but that's the beauty of it. I was laughing the whole way through, but by the end I was truly invested in this story and it could not have ended more perfectly. Episodes are only roughly 10 minutes long each, which means at 12 episodes the full run time of this show is only about 2 hours. If you watch this show I highly recommend you treat it like a movie and watch it all in 1 sitting, and if you can manage I also recommend watching it with friends who can get caught up in this masterpiece with you.