Erin's Challenge - Season 1

This is a gentle tale about people trying to regain something. And it is a tale of battle. Rei Kiriyama had lost his family in an accident when he was young. Now he is a 17-year-old pro shogi player who is burdened with deep loneliness. Rei lives alone in an old town in Tokyo, but after becoming acquainted with three sisters, Akari, Hinata and Momo, he begins to change little by little...

Yui Hirasawa has no clue which club to join, but she’s determined to do something this year. As luck would have it, she discovers a flyer for the Light Music Club and decides this is the club for her. But there's one problem: She first must learn guitar!

Ayumu just fell in love at first sight with Urushi and joined the illegitimate Shogi Club! But Ayumu has vowed not to confess his feelings until he can best Urushi, and he has a long way to go before he can stand up to her strategic brilliance.

During recess, Olivia, a foreign transfer student who doesn't know English, plays a game of "look-the-other-way" with Hanako Honda, a loud-mouthed airhead. Their rowdy behavior spurs the ire of Kasumi Nomura, a deadpan loner constantly teased by her older sister for her tendency to lose games. Not willing to compete, Kasumi declines Olivia's offer to join the fun, but eventually gets involved anyway and dispenses her own brand of mischief. Soon, a strange friendship blossoms between the peculiar trio, and they decide to form the "Pastime Club," where they are free to resume their daily hijinks. Whether it be failing to learn English, trying desperately to become popular, or getting caught by teachers at the wrong time, school life will never be boring when these girls are up to their hilarious antics.

Nijigasaki High School is located in Odaiba, Tokyo. The school is popular due to its free school style and diverse majors. The story centers on the members of school idol club in Nijigasaki, and their attempt to prevent the club from being abolished.

Spring in the first year of high school. Kumiko, a member of the brass band in junior high school, visits the high school brass band club with classmates Hazuki and Sapphire. There, she comes across Reina, her former classmate from junior high. Hazuki and Sapphire decide to join the club, but Kumiko can’t make up her mind. She recollects her experience with Reina at a competition in junior high school.

After Hideki Nishimura confesses to a girl online, he is shocked when she turns out to be a boy. Traumatized, he swears to never trust any “girl” players. That is, until one confesses to him! Ako Tamaki is a beautiful loner who has trouble differentiating between what’s reality and the online world she spends so much of her time in. Can Hideki and his guild friends help fix socially inept Ako?

Ten year old child prodigy, Chiyo Mihama, is finding it tough fitting in at high school with the girls five years her elder: Osaka (dimwitted with a weird take on the world), Tomo (a powder keg that goes off at a moment’s notice), Kagura (the competitive athlete of the bunch), Yomi (the hothead), and Sakaki (timid and obsessed with a love of animals that isn’t reciprocated). Together with their teacher, they navigate the rough waters and fun times of high school.

A “small” new student, Ushio Hinomaru, appears before the weak little sumo club of Oodachi High School! The words “big” and “heavy” are the rules to this sport, which does not fit this newbie any inch, but this guy goes and does what...!? Ushio and the small sumo club climbs its way to the top! The goal is Hinoshita Kaisan, a title for the highest rank in professional sumo, equivalent of Yokozuna.

Inspired by a small-statured pro volleyball player, Hinata creates a volleyball team in his last year of middle school. Unfortunately the team is matched up against the "King of the Court" Tobio Kageyama’s team in their first tournament and inevitably lose. After the crushing defeat, Hinata vows to surpass Kageyama After entering high school, Hinata joins the volleyball team only to find that Tobio has also joined.