夏の日にようこそ Natsu no Hi ni Yōkoso! Welcome to Summer Days!

Kaoru is crushed when he is turned down by a girl named Nanako Midorikawa, after inviting her to go a fireworks festival with him. She claims that she has an audition the same night, and Kaoru accepts this excuse but does not believe it. Meanwhile, Tatsuhiro is tormented by his newfound feelings for Misaki, and is so disturbed he can’t concentrate on writing a scenario. Tatsuhiro and Kaoru decide to showcase their game in the Summer Comiket, otherwise known as NatsuComi. Tatsuhiro later goes with Misaki to the fireworks festival.

中華街にようこそ! Chūkagai ni Yōkoso! Welcome to Chinatown!

Tatsuhiro is desperately attempting to clean his dirty apartment before his mother comes, and Misaki helps him. The two and Tatsuhiro’s mother later have lunch in a Chinese restaurant. When Tatsuhiro leaves to go to the bathroom, his mother tells Misaki that she knows this was all a setup because she could always tell whenever he was lying. Tatsuhiro overhears this and starts feeling even guiltier. However, in his presence, his mother goes along with the story and does not give Tatsuhiro a chance to clear himself. Tatsuhiro and Misaki later get carried away with their fake relationship.

モラトリアムにようこそ! Moratoriamu ni Yōkoso! Welcome to the Moratorium!

Traumatized by his latest panic attack, Tatsuhiro refuses to leave his apartment. Under the guise of a summer flu, he gets Kaoru to buy him his daily necessities. Later, he is surprised by a phone call from his mother who tells him that she would like to visit him and discuss his future. He prevaricates, fearing the assumptions of his mother, claiming that he has a job and a girlfriend whom he plans to marry. This leads Tatsuhiro in even deeper trouble, and he gets Kaoru to help him create a fake video game developing company. Misaki later volunteers to be his girlfriend.

クラスルームにようこそ! Kurasurūmu ni Yōkoso! Welcome to the Classroom!

Tatsuhiro discovers from Misaki that Kaoru has a cute girlfriend in his media school. Despite his hikikomori condition, Tatsuhiro ventures out to Kaoru’s school to ascertain the truth. However, while the trip causes him another panic attack, he manages to find out the truth about Kaoru’s supposed relationship.

カウンセリングにようこそ! Kaunseringu ni Yōkoso! Welcome to Counselling!

Hitomi and Tatsuhiro’s past is explored briefly. Tatsuhiro finally admits to Misaki that he is a hikikomori, and signs the contract. They have their first counseling session, and Tatsuhiro embarrasses Misaki with the concept of dream interpretation.

新世界にようこそ! Shin Sekai ni Yōkoso! Welcome to the New World!

Tatsuhiro is now a full-fledged otaku, and Kaoru brings him to Akihabara in hopes that it will inspire him to work. They end up going to maid cafes and spending all their money on otaku merchandise. By chance, Tatsuhiro bumps into his high school senior Hitomi Kashiwa, and ends up having a drink with her.

美少女にようこそ! Bishōjo ni Yōkoso! Welcome to the Beautiful Girls!

Kaoru introduces Tatsuhiro to eroge, and Tatsuhiro spends all his time playing all of Kaoru’s erotic games and collecting pornographic pictures for “reference material”. He ends up not doing any work on the game, much to Kaoru’s chagrin.

クリエイターにようこそ! Kurieitā ni Yōkoso! Welcome to the Creator!

Misaki tries to convince Tatsuhiro to sign a contract with her, whereby he will be obligated to listen to her as she tries to ease him out of his hikikomori lifestyle. Later, Tatsuhiro discovers that his otaku neighbor is actually his high school friend Kaoru Yamazaki who is studying a media course in creating games. Using Kaoru’s book, he fibs to Misaki that he is actually a games creator, not a hikikomori, and that he could show her a game that he had made. Overhearing this conversation, Kaoru decides to help Tatsuhiro make an eroge, and assigns him the role of the scenario writer.

プロジェクトにようこそ! Purojekuto ni Yōkoso! Welcome to the Project!

Tatsuhiro Satō’s hikikomori origins are explained. His anxieties lead him to believe that he is a victim of a conspiracy known as the N.H.K., which creates hikikomori via manipulating the media. He is constantly annoyed by hearing the music of an unknown otaku living next door. He meets a mysterious girl called Misaki Nakahara who claims to be able to cure his hikikomori ways.

“Countermeasures for Issues that Arise during the Reorganization of a Group” “Soshiki no Saikōchiku-ji ni Hassei suru Kadai to Taisaku” (組織の再構築時に発生する課題と対策)

The club is depressed due to their punishment of community service. Sasahara becomes the new President and proposes that the society attend Comifes as a circle.

“On the Presence of Malicious Intent in Urban Crimes” “Toshi-gata Hanzai ni okeru Akui no Shozai-ron” (都市型犯罪における悪意の所在論)

Kasukabe decides the club room needs a cleanup, but an accident causes Genshiken to be banned from the university fair. As an apology, Kasukabe takes Ohno’s place in the fair’s cosplay contest.

“The Fetishism of Leisure Time Expenditures Considered by their Economic Result” “Keizai Kōka kara Kangaeru Yoka Shōhi no Fetishizumu” (経済効果から考える余暇消費のフェティシズム)

The club, along with Keiko, pays a visit to the beach, much to the dismay of some of the members; Keiko decides to compete for Kohsaka’s feelings and tries to become an otaku.

“Concerning the Existence and Non-Existence of Explanatory Duties Under Specially Confined Circumstances” “Tokushu Heisa Jōkyō-ka ni okeru Setsumei Gimu no Umu ni tsuite” (特殊閉鎖状況下における説明義務の有無について)

Madarame is stuck in the club room with Kasukabe and tries to strike up a conversation, running through different scenarios in his head which parody the visual novel format.

“Comparative Study in Production Models and Processes” “Ryōsan-gata Seizō Katei ni okeru Hikaku Kenkyū” (量産型製造過程における比較研究)

Ohno and Sasahara start a plamo project and get the whole club involved, while Kasukabe learns an important lesson.

“Aspects of Behavioral Selection in Interpersonal Relationships” “Taijin Kankei ni okeru Kōdō Sentaku no Tokuchō” (対人関係における行動選択の特徴)

Two freshmen take an interest in Genshiken and join them for a night out on the town. Kasukabe, however, has no intention of making them feel welcome.

“On Connecting with Others through Subculture” “Sabukaruchā o Meguru Tasha to no Kankei-ron” (サブカルチャーをめぐる他者との関係論)

Kasukabe tries to make herself more appealing to Kohsaka by taking an interest in his hobbies by trying to learn how to play Puyo Pop Fever. Sasahara’s sister Keiko also makes an appearance and calls on her brother for help.

“Limits of Rejection and Receptiveness as Observed in Autonomous Behaviour” “Jiritsu Kōdō ni Miru Haiseki to Juyō no Kyōkai” (自律行動に見る排斥と受容の境界)

Due to Genshiken’s lack of “activities” as defined by the school, the club is threatened with closure; salvation comes from an unlikely source as Kasukabe intervenes personally.

“The Sublimating Effects of the Dissimulation Brought on Through Makeup and Costume on Mental Obstacles” “Funsō to Kasō no Ika ni yoru Shinri-teki Shōheki no Shōkasayō” (扮装と仮装の異化による心理的障壁の昇華作用)

Ohno is introduced as she joins Genshiken, while Genshiken takes part in a university club fair and Kasukabe’s ex-boyfriend pays her a visit.

“Problems and Merits of Local Culture Promotion” “Chiiki Bunka Shinkō no Mondaiten to sono Kōseki” (地域文化振興の問題点とその功績)

Genshiken goes on a club trip to Comiket, a large comic convention; Madarame seriously injures his hand, but pretends to be fine in the name of fandom until the pain becomes too great to bear.

“Comparative Classification of the Modern Youth through Consumption and Entertainment” “Shōhi to Yūkyō ni yoru Gendai Seishōnen no Hikaku Bunrui” (消費と遊興による現代青少年の比較分類)

Genshiken takes Sasahara to Akihabara for dōjinshi shopping while Kohsaka and Kasukabe go to Harajuku for clothes; Kasukabe discovers Kohsaka’s hentai collection and gets an introduction on the subject from the others.