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Funimation
Season 1 of the anime consists of 13 episodes.
The first episode is titled Izuku Midoriya: Origin, and it aired on April 3, 2016 (JP) and May 5, 2018 (EN).
The last thirteenth episode is titled Upon Each of Their Hearts and aired on June 26, 2016 (JP) and August 4, 2018 (EN).