Yokoi-san is trying her best to listen in class, but she can't help but watch as Seki-kun is lining up erasers next to her. Seki-kun! Are those dominoes?!

Seki-kun starts shining his desk during class. Amazed at the effect of his work, Yokoi-san finds herself being dragged into his want to shine more desks.

During science class, Seki's attempts at constructing a hanko stamp from his eraser are hindered by his laid-back classmate, Akiyasu Uzawa.

As Seki knits in class, Rumi watches him as an expert, but is surprised by some of his maneuvers as well as the final product.

Rumi watches in harrowing anticipation as Seki has a group of miniature bears do a mountain climbing expedition on the back of their classmate, Takahiro Maeda.

During water safety lessons, Rumi once again becomes invested in the diligence of the robot family, becoming panicked when the child robot is thrown into the pool by Uzawa.

Whilst Rumi is off school with a cold, Goto observes Seki as he plays a game of paper sumo involving a robot opponent, assuming he had a fight with Rumi.

As the class watches an instructional video, Seki plays a game of "Shogi vs. Chess" in the dark, with Rumi eager to help the shogi pieces as they struggle against the black chess pieces hidden in the darkness.

Seki puts on a blindfold and plays a game of fukuwarai, which soon evolves into a twisting story about family life.

Seki brings various pairs of glasses to see which pair looks the best on him.

Seki draws a flip book comic in his textbook, which he even records sound effects to, leaving Rumi curious about the finished result.

Rumi learns of a surprise belongings inspection, believing it to be the perfect chance for Seki to get busted. However, she becomes concerned about the robot family, especially when Seki seems to make no attempts to hide them properly.

An OVA bundled with DVD box volume 1.

An OVA bundled with DVD box volume 2.