Rakudai Kishi is quite an old anime already, being from 2015 and I remember watching it back then. Old animes has a tendency to be fairly nostalgic, and I got to say, this one is not exception to that. A classic story of a genius and an ordinary person, but what sets this a part from other stories with this trope is the relationship between the characters, one thing we can already start to see from the first episode alone. Coupled with some really good fighting scenes and a good opening song that survives the test of time, this episode is a really good start for the show.