Finally a happy ending?

Eren Jaeger, a five year old little kid determined to join the survey corps, is taken in by Levi, humanity's strongest soldier? What will happen? (I suck I summaries I'm sorry)

Three years after Levi's death, Eren would go to a florist to buy flowers for Levi. One typical day, a little boy came into his life and it is Eren's responsibility to care for the child. (To me, this is a shitty story. It's chapters are so goddamn short . But I appreciate anyone who reads it though)

Levi is dying. Eren is trying to make him happy. (Hello,again and Goodbye, my love are suppose to switch places)