Noboru Sakashita, a proud but poor commoner, worked his way into the elite Seihou Academy on a scholarship with a single goal: to find a rich girlfriend among the school's pampered students. Instead, he catches the attention of Naoya Yuuki, the tall, dark, handsome, and wealthy "school prince" whom all the girls adore. After a persistent and bewildering pursuit, Noboru finds himself falling for the very rival who ruined his original plan.

The extra collection revisits Yuuki and Noboru after they have become a couple. Their daily life remains as lively as ever: Yuuki visits the cramped Sakashita household and bonds with Noboru's four younger brothers, Noboru receives an invitation to visit Yuuki's older brother in America, and the meddlesome cousin Kazushi continues to stir up trouble. Yuuki's openly passionate, sometimes embarrassingly direct desire for Noboru is played for both comedy and sweetness, while Noboru's stubborn pride and sharp tongue keep the power balance from tipping too far.

The volume is structured as a compilation of short pieces originally published in bonus booklets, commemorative pamphlets, doujinshi, and other venues that were never collected in the regular tankobon. It contains vignettes ranging from one-page gags to longer stories of eight to eighteen pages. The Sakashita twins, the younger brothers Kakeru and Ayumu, appear frequently in humorous scenes, and there is an extended focus on the chaotic warmth of the Sakashita household. Also included is a bonus track for the related series Benriya-san, featuring a tipsy Akihiko Shiba. The collection is built around the established relationship of the main couple rather than introducing new conflict, emphasizing domestic comedy, physical intimacy, and affectionate banter.