High school student Murai falls in love with his nerdy teacher, Tanaka. Unfortunately, she says she will never be interested in a boy with long black hair. Murai dyes his hair blond, becoming the spitting image of Tanaka's favourite character.

In return for borrowing the game Sengoku Koi Emaki, Murai participates in the Doujinshi Convention.

Tanaka worries that Murai has lied to her and leaves the Doujinshi convention. Drunk and furious, she falls asleep outside a liquor shop run by the Kiriyama family. Kiriyama and Hirai take the opportunity to listen to her.

Yayoi Fukunaga is happy to see Murai again for the first time since childhood, but is shocked to learn that he is in love with someone else. Murai asks Tanaka to accompany him to the summer festival, but she refuses because she has other plans.

Returning from the summer festival, Tanaka confesses that she only came because she was worried about Murai. Murai asks Tanaka to give him a three-second hug in exchange for forgiveness.

Tanaka is worried about Murai's frequent dozing off in class, and Kiriyama and Hirai tell her that Murai is training behind her back. When Tanaka learns the reason behind it, she runs off to Murai.