Grades and brigades

Eren is a depressed teen when he and Levi meet for the first time. The two of feel like there's something between them, but their meeting was only brief. A few years later, Eren and Levi end up meeting again but under different circumstances. Their relationship begins to flourish and they have visions of each other from a different time. They help each other with their problems and fight the odds that are against them.

Ereri reincarnation and teacher student fanfiction!!
*Zelmere