Lava Explosion in My Hero Academia

An ordinary yet enthusiastic young man accidentally arrives in this world—without ever having watched My Hero Academia. Reborn into a society where superpowers have become the norm and heroes are a formal profession, he awakens a powerful quirk known as “Magma.” Driven by instinct, passion, and the lingering mindset of his previous life, Igarashi Masata sets his sights on the path of becoming a hero, stepping forward into a dangerous and extraordinary world without any foreknowledge of its rules or future. — Description from novelcodex.org