Charlotte is a 13-episode 2015 TV anime featuring a bunch of students who have different superpowers.  The protagonist uses his power to cheat in school exams but is discovered by the student council from another school.  He is asked to transfer and join this student council in order to protect other students with superpowers from being found and mistreated by scientists.

I like this subject.  I also like the jokes in this anime.  I watched it because it has time travel.  There is something missing from the relationship between the protagonist and the female student council president though.  Most importantly, the ending is dissatisfactory.  It involves stupid decisions, instances of not using superpowers when they are especially needed, failing to employ time travel to get the best outcome, forgetting to help someone important when the timeline is reset.  The ending episode is just a mess.