Only One Wish Away - An Ereri/Riren Fanfiction

Levi Ackerman has and apparently always will be seen as a horrible influence with his past experiences and his life that spun out of control without his consent or without him even trying.
Why does Levi feel so lonely; so useless? He couldn't save her. He was blamed for HER death.
As his life goes on, will he find what he needs to belong? Will he find what he needs to feel like himself again? It's all up to him of course, since it's his life. He only has one question; will all of his effort be worth it, or will it be nothing?
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Eren Jaeger, an emotion wreck that has found multiple sturdy hand holds along his struggle to recovery after such a long time, is now finally able to rest with the final bell of his class of highschool echoing throughout the school itself. One problem though; he will be all alone, in a house his father is paying for, taking care of his adopted little sister, Mikasa. He also has to deal with an annoying blonde, who insists on him joining a social media.