Yusuke’s growth throughout the series is incredible when you think about it; going from being a regular kid to being one of the most powerful “demons” ever is a remarkable transformation. Yusuke certainly learns a variety of Sprit techniques that he uses to defeat his many opponents, and those techniques combined with his unique fighting style make him very formidable. However, despite Yusuke’s training over the course of the story, he dies for the 2nd time in the series at the hands of Sensui. It is only when Raizen revives him in a newly awakened demon form that Yusuke attains the rank of S class. Both Raizen’s possession of Yusuke in order to defeat Sensui and Yusuke’s performance against Yomi in the Makai Tournament demonstrate that Yusuke is certainly stronger than most of the S+ demons. One can only imagine just how much power Yusuke will obtain once he is an adult, as the series ends with him having the potential to become the most powerful character in the series. That is why he became my favorite anime character of all time.