In this mixed media stop motion / CG animation short Harbor Tale (ハーバーテイル), Yuuichi Itou anthropomorphises a red brick who has resided on the corner of a red brick building since the times when the clack of geta could be heard on the busy streets of Yokohama. The building is only a couple of blocks from the harbour and when the building was new the red brick recalls seeing a white sailboat coming into port.

Zenitsu Agatsuma is determined to be the subject of adoration by receiving chocolates on Valentine’s Day—and this year, he is taking no chances. Enlisting the help of his friend Tanjirou Kamado, the two are prepared to learn from some of Kimetsu Academy's most popular figures. Together, they ask Kyoujurou Rengoku, the history teacher; Giyuu Tomioka, the PE teacher; and Tengen Uzui, the art teacher, about the secrets to their popularity. However, only time will tell if following their advice will bring the same success for Zenitsu.

Theatrical follow-up to Sasaki to Miyano, adapting the "Graduation Arc" of the manga. Miyano’s world of Boys’ Love manga turns to reality when chance leads him to Sasaki. Now, Sasaki wants to spend every opportunity with him.

Prologue of .