(Let's ignore the time and country gap, please.)

For many, many months, complaints about an odd odour, and the sounds of heavy machinery appearing in an apartment building tucked in on the cheapest alleyway Japan had. But the police decided to ignore the reports, shrugging off a distressed woman's constant calls. Finally, after many months, the woman decided to call the Hero Association, hoping for any help, and so, Aizawa and his class were sent to investigate.

"Ugh.. what's that smell?!" Mina, and a couple of other students gagged before turning to the ventilation leading to the room beside this one.

"Finally, someone willing to listen! I've tried for months trying to get their police to investigate my neighbour, Jeff! Please, for the sake of an old woman, do it!" The distressed woman, or as she introduced herself, Glenda Cleaveland, informed, her voice displaying the sleepless nights and anxiety she's experienced.

"Of course, ma'am. We will get to it immediately, are you aware if he is home?" Aizawa asked neutrally, crossing his arms.

"I-i.. believe he is. The room to the left.. his name is Jeffery Dahmer.." Glenda nodded anxiously.