Hori-san and Miyamura-kun

At Katagiri Senior High School, Kyouko Hori lends her English notes to her friend Yuki Yoshikawa, teasing her for skipping the translation work. When Kyouko knocks her eraser to the floor, a passing classmate named Izumi Miyamura quietly picks it up and hands it back. The two girls size him up as a gloomy loner and joke that he must be an otaku. Kyouko turns down an invitation to karaoke and heads home, where a very different routine waits for her.

Away from campus, Kyouko changes clothes, cleans the house, and looks after her younger brother Souta, since their parents are rarely around. She guards this domestic side carefully, keeping it walled off from her polished school image. One afternoon Souta comes home with a bloody nose, walked back by a pierced young man Kyouko does not recognize. Over tea she learns the stranger is actually Izumi Miyamura, who looks nothing like the reserved figure from class once his hair is down and his piercings are showing.

Rattled that Izumi has seen her unguarded and without makeup, Kyouko approaches him the next day and invites him back at Souta's request. Rather than avoid one another, they realize how alike they are: each wears one face in public and another in private. Izumi starts dropping by regularly, and Kyouko gathers that he is no otaku at all. His family runs a bakery, he pierced himself back in junior high, and his grades are weak apart from acing health and physical education.

When an egg sale catches Kyouko's eye, a surprise student council meeting traps her at school past closing, so she texts Izumi to shop in her place. He sprints across town, vaults a fence, and nearly lands on Yuki before dashing off in his unfamiliar outside appearance. Back at the house, the two admit they would rather keep each other's hidden selves private, reserved for one another alone. Kyouko, flustered by how boldly he puts it, shoves a cold drink at him, and Izumi cheerfully decides that her anger is adorable.

Kyouko and Yuki trade their first impressions of the eccentric Miyamura, pegging him as an otaku type. The chapter also lays out Kyouko's demanding home life, where housework and caring for Souta leave little room for friends. The central turn comes when she and Izumi accidentally uncover the hidden versions of each other: the pretty, capable honor student who is a hardworking daughter at home, and the withdrawn classmate who ties his hair up and reveals his piercings once he steps outside. From there, Izumi's regular visits let the pair learn more about one another and begin trusting each other with those private sides.

This is the debut chapter of the Horimiya manga, written by HERO and illustrated by Daisuke Hagiwara. It carries the title Hori-san and Miyamura-kun, romanized as Hori-san to Miyamura-kun, and opens the first volume. The chapter first ran in Issue #11 of 2011 and was released on October 18, 2011, spanning thirty-six pages. It introduces the two leads together with Yuki Yoshikawa, Souta Hori, and Tooru Ishikawa, and leads straight into the second chapter. Izumi notes that he wears nine piercings in all, four studding each ear with a final one on his lip.