The Pupil Who Is An Extremely Poor Talker

Genos crosses paths with Don Pacino, a wanted C-Class criminal, and his crew inside a warehouse where they are holding a captive tied to the Typhoon Family. Pacino confiscates Saitama's keys and offers to return them if Genos explains what he knows about the prisoner. Genos agrees but launches into a long, meandering account, beginning with a bathhouse chat where he and Saitama debated which sounds best suit soaking in hot water. He recounts how Saitama sent him home with the room keys and a warning not to lose them, then decided to cook hot pot and split up to grab discounted chicken thighs before a supermarket sale ended.

Genos explains that he checked the nearest markets, paused to destroy a monster along the way, and reached the store only after the sale had closed. An irritated Pacino demands he get to the point about his link to the Typhoon member, so Genos continues. At a second shop he found closed, a passerby told him Pacino had forced every store in the area to shut down after ransacking them. When the man suddenly coughed and collapsed, Genos caught him, and the keys slipped from his grip, which is how Pacino came to have them. Realizing at last that Genos is merely a bystander with no ties to the captive, Pacino and his gang open fire. Genos, untouched, unleashes his incineration technique, sparing their lives and freeing the prisoner. Home again, Genos confesses about the keys and the missed chicken, and Saitama calmly reveals he kept a spare set the whole time, so they cook their dinner with the meat Genos managed to buy.

Don Pacino seizes Saitama's keys and interrogates Genos about a Typhoon Family captive. Genos delivers a roundabout story about bath talk, a chicken sale, and how the keys were lost. Once Pacino grasps that Genos is uninvolved, the gang shoots him, and Genos incinerates them without killing, freeing the prisoner. At home, Saitama reveals he had a spare key all along.

The OVA plays as a comedic side story built around Genos's notoriously long-winded storytelling. It falls between the entries titled A Shadow That Snuck Up Too Close and The Ninja Who Is Too Complicated in the anime's supplementary lineup.