Part 1

After not seeing his fifteen year old friend, Eren Yeager, for over a year, Levi Ackerman has turned away his happiness and relationships and focuses on his work and life, until his close friend Petra Ral decides to make Eren move in with Levi to see if he'll change his constant frown to a smile.

Despite the fact that Eren's personality has changed over the year from determined to humorous, it makes things worse for Levi as he can't stand coming home and finding his apartment room trashed by his sixteen year old roommate.

But can Eren change Levi before it's to late?

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Mature themes/bad language/sex.