Reborn in My Hero Academia with a System

One day, the last survivor of a devastating world received a visit from a woman, who offered him the opportunity to reincarnate in another world, however, there was one condition. "Sixteen years from now, a universal threat will appear, and this world will need to be ready for it. I want you to help this world get ready." Now, reincarnated in a world of quirks and portals, the only thing the baby will be able to rely on, will be the system that to get stronger.