The infamous Sorcerer Hunter as your roommate. A very horny, yet most annoying roommate you've ever had.
At first, it was out of pity you let Toji stay in your spare room. You got caught up in one of his battles, almost dying at the hands of a sorcerer of all people, yet he saved you. To repay him, you said you'd do anything.
Days later, you probably regret saying that. Because every single time Toji came home, a mere few seconds later, your met with loud thudding noises, and the sound of different women practically screaming his name.
And yes, he knows you can hear him.