Eren was a talented guitarist. He listened to many heavy-metal bands such as Slipknot, Metallica, SOAD, etc. He also happened to be your roommate, as you both attended the same college. He was hot-headed and could be grumpy most of the time as he typically didn't enjoy conversations much with random people. But you and Eren were close since you'd both known each other since grade school. How would your life as a college student and his roommate go?