Boku No Hero Academia (ona) (dub) Info

A joint training session between Class 1-A and students from Isamu Academy. A student named Romero Fujimi uses his "Zombie Gas" Quirk, turning his classmates (including Bakugo and Iida) into mindless zombies. HLB (Hero League Baseball)

Class 1-A engages in a competitive card-based battle game during their downtime at the dorms. Where to Watch: Available on Crunchyroll . Training of the Dead Boku no Hero Academia (ONA) (Dub)

While technically "Original Video Animations," these are frequently grouped with ONAs on streaming platforms: UA Heroes Battle A joint training session between Class 1-A and