Hina Tsurugi and her family have just moved to a quaint seaside town. Hoping to savor the sight of the peaceful ocean, Hina stumbles upon a girl named Yuuki Kuroiwa—an upperclassman at her new school—who invites Hina to join her in fishing. Hina reels in an octopus, which falls onto her; being afraid of bugs and big creatures, she panics and begs Yuuki to remove it from her. Yuuki sees this as an opportunity to force Hina to join the school's Breakwater Club—a club where members gather, catch, and eat various types of marine life as their main activity. Although her attempts to refuse to join fail, Hina slowly begins to discover the hidden joy in fishing. Her view on the sport changes, now looking forward to all the delightful experiences she can take part in alongside her fellow club members.

High school student Issei Hyoudou is your run-of-the-mill pervert who does nothing productive with his life, peeping on women and dreaming of having his own harem one day. Things seem to be looking up for Issei when a beautiful girl asks him out on a date, although she turns out to be a fallen angel who brutally kills him! However, he gets a second chance at life when beautiful senior student Rias Gremory, who is a top-class devil, revives him as her servant, recruiting Issei into the ranks of the school's Occult Research club. Slowly adjusting to his new life, Issei must train and fight in order to survive in the violent world of angels and devils. Each new adventure leads to many hilarious (and risqué) moments with his new comrades, all the while keeping his new life a secret from his friends and family in High School DxD! [Source: MAL Rewrite]

In 2019, Kaito Yashio and Akiho Senomiya are the sole members of the Robotics Club at Central Tanegashima High School in Kyushu, Japan. Kaito is a laid back student and a skilled gamer who is just trying to help Akiho, his childhood friend. She is an energetic positive-thinking girl who yearns to complete the ongoing project of the club: building a functional replica of Gunvarrel, the main robot of a once popular TV series. As they gather new members and try to assemble the robot, Kaito starts stumbling upon secret reports that might reveal a conspiracy of large proportions. Unaware of what he is actually dealing with, Kaito little by little starts discovering clues laid by the mysterious Ko Kimijima.

Chihaya Ayase has spent most of her life supporting her sister’s model career. When she meets a boy named Arata Wataya, he thinks Chihaya has potential to become a great karuta player. As Chihaya dreams of becoming Japan's best karuta player, she is soon separated from her karuta playing friends. Now in high school, Chihaya still plays karuta in the hope that she will one day meet her friends again.

The series revolves around the Mizuki Diving Club (MDC), which is on the verge of closing down after having financial troubles. The club's new coach persuades the club's parent company to stay open on one condition: that the club sends one of its members to next year's olympics as part of Japan's olympic team.

A parody series featuring the entire cast of The Melancholy of Haruhi Suzumiya in a smaller form factor. Among the changes are: Yuki plays eroge, Haruhi is even more obnoxiuous and loud, Mikuru is even more emotional and Koizumi harbors a deep love for Kyon. Kyon, on the other hand, is generally the same as ever.