Ep. 5: The narrative centers on the application of an eraser stamp mechanism within the storyline.

Episodes
- Ep. 1 · Yokoi struggles to focus in class while observing Seki arranging erasers
- Ep. 2 · Yokoi struggles to focus while Seki unexpectedly plays shogi beside her.
- Ep. 3 · Seki-kun polishes his desk in class, prompting Yokoi-san to join his obsession
- Ep. 4 · Seki-kun begins a game of Go at his desk while Yokoi-san attempts to ignore him.
- Ep. 5 · The narrative centers on the application of an eraser stamp mechanism within the storyline.
- Ep. 6 · A disaster drill takes place involving the characters and locations mentioned in the source material.
- Ep. 7 · Students exchange written notes during a class session
- Ep. 8 · A match of Shogi takes place
- Ep. 9 · A narrative focusing on the activity of knitting