Shigurui will grab you with its dark yet amusing vibe from the very beginning. There were times where i got just a little bored, but as a whole the anime is excellent. This anime is probably as realistic as it gets, it is most honorable for a samurai show. The grotesqueness is absolutely 100% enjoyable. Okay i lied, 95% for sure though. Anyhow if your dad is getting tired of the old cowboy movies put this on for him.