The BEST episodes directed by Yokoyama Akitoshi
#1 - Secret Society "Lucky Cat Chinese Restaurant"
The Tatami Galaxy - Season 1 - Episode 9
As a freshman, the protagonist joins the Secret Society Chinese Restaurant, not suspecting it to actually be a secret society. The Society appears to be a syndicate of sorts which has organized most-all of the dubious campus activities from the previous episodes, in particular the Cheery Cylcle Cleanup Corps which stole bikes and planes from episode 3, the Library Police from episode 4 and the Print Shop which had provided the protagonist with papers in episodes 6-8. The society is led by Aijima, who sets the protagonist and Ozu on various missions for the organization, several of which were alluded to in previous episodes.
#2 - Movie Circle Misogi
The Tatami Galaxy - Season 1 - Episode 2
As a freshman in college, the main character had joined the movie circle, encouraged by the promise of friends and the joy of filmmaking. Treated badly and having his ideas struck down by the president of the circle, 8th year student Jougasaki, and encouraged by Ozu, he devotes his next few years to making movies on his own, culminating in a documentary exposing the worst aspects of Jougasaki's character.
#3 - Disciples Wanted
The Tatami Galaxy - Season 1 - Episode 4
In this episode, the protagonist signs up as a disciple of Higuchi, but discovers that he is 15 minutes too late to be the first discple, the position having been usurped by Ozu. Higuchi makes him and Ozu do several meaningless tasks, and the main character is not sure what training he is receiving. Akashi is also a part of the disciple group. The protagonist receives a task to find a mystical tortoise brush that can clean almost anything, and he's helped by Akashi-san in this quest.