The fifth season of Boku no Hero Academia. The rivalry between Class 1-A and Class 1-B heats up in a joint training battle. Eager to be a part of the hero course, brainwashing buff Shinso is tasked with competing on both sides. But as each team faces their own weaknesses and discovers new strengths, this showdown might just become a toss-up. The fifth season of Boku no Hero Academia. The rivalry between Class 1-A and Class 1-B heats up in a joint training battle. Eager to be a part of the hero course, brainwashing buff Shinso is tasked with competing on both sides. But as each team faces their own weaknesses and discovers new strengths, this showdown might just become a toss-up.