The premise is pretty simple but overall the show manages to be really entertaining despite it's slice of life feel. Saiki K is a teenage boy with pretty much every single superpower you could think of, and he kind of hates it. he finds everything supernatural really annoying and tries to live his life as inconspicuously as possible, yet all the people around him have it in their heads that he's the centre of their social lives.
Ah yes, "The Disastrous Life of Saiki K." or "Saiki Kusuo no Ψ-nan" is most certainly my favorite comedy anime XD I highly recommend watching it if you wanna have a good laugh ^^
I know I'm late, but basically he's psychic and talks via telepathy. Also probably makes it a lot easier to animate since the main character doesn't speak except for I think four times in the whole series.