The OST is really one of a kind and complements the show extremely well. The visuals in the opening contain many western film references that will be appreciated by some. The actual opening released by Kenshi Yonezu fully embraces the unpredictable and erratic nature of Denji. The soundtracks composed by Kensuke Ushio also play perfectly into the fight scenes. Additionally, the eeriness of some of the other tracks in his soundtrack leaves the audience unsettled and pushes them to think if there is more to the scenes than meets eye. The 12 different ending themes was an original idea that were delightful touches to end an episode off on. The abstract visuals in the endings were also solid inclusion that referenced what happened in the episode nicely.
Overall, Chainsaw Man impresses on so many levels I think it's safe to say it delivers on the hype it got. From its extraordinary characters to its technical brilliance, Chainsaw Man is really a cut above any recent shounen that's easily become one of my favorites. As someone who has recently read part 1 of the Chainsaw Man manga, I can definitively say this is only the beginning of something exceptional, and I'm really excited to see how they animate the upcoming arcs.