You were the youngest graduate of the 104th training corps and one of the most promising officers of the military's Survey Corps- not that this mattered in the end. At fifteen, you die fighting colossal titans to buy time for your comrades raced to stop a worldwide genocide known as "the Rumbling". You thought everything would end there for you. However, the universe decides otherwise, and you somehow found yourself in a reality thousands of years in the future. In a world filled with quirks, heroes, and villains. After all you've been through, how will you react when given a chance to become a "hero" and attend school with a group of slightly problematic teenagers, under the alias Y/n L/n? Will you be able to return to a life with some semblance of normalcy? Is this future that you and your comrades dedicated your hearts for what you imagined it to be? (I do not own AOT nor MHA)

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Tsunade gets reincarnated in the Young Justice universe.