In Episode 3, Komura meets Mie-san, who has once again forgotten her glasses. This time, she mistakes a plastic bag for a cat, leading to a humorous situation. Komura is concerned about Mie-san's constant forgetfulness and worries that she might feel embarrassed once she realizes her mistake.

As the episode progresses, Mie-san keeps forgetting her glasses, resulting in various comedic scenarios. At one point, she mistakes Komura for another classmate, Azuma-kun, because her vision is so poor. This causes Komura to question his feelings for Mie-san, as he grows jealous of her friendly interactions with Azuma-kun.

Later, Komura finds a love letter addressed to Azuma-kun. He hands it to Mie-san, who cannot read the sender's name because she isn't wearing her glasses. This leads to a misunderstanding, as their classmates assume Mie-san has feelings for Azuma-kun. Komura is confused and concerned, unsure of how to clear up the misunderstanding.

In an unexpected twist, Mie-san confesses that she likes Komura, leaving him flustered and unsure how to respond. The episode ends with Komura being asked to read Azuma-kun's reply to the love letter, in which he merely thanks Mie-san for delivering it. Komura is left to ponder Mie-san's feelings for him.

The episode is filled with comedic moments stemming from Mie-san's forgetfulness and Komura's inner struggle with his emotions. It also introduces a potential love triangle between Komura, Mie-san, and Azuma-kun.