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Set in the year of 1986, Umineko no Naku Koro Ni (Translated as Umineko: When they cry in English) tells the tale of the affluent Ushiromiya family during their yearly tradition to gather in the island of Rokkenjima. But during this time in the island, family bonds are not strengthened.

In an attempt to establish a secret base to prepare for the coming Keron invasion, Sergeant Keroro infiltrates the home of the unsuspecting Hinata family. However, he is immediately overpowered by two children, forcing him to reveal his true identity.

Third-year high school student Koyomi Araragi barely survives a vampire attack, thanks to the help of Meme Oshino, a strange man who lives in an abandoned building. Despite being able to save his humanity, several powers from vampirism remained in his body as side effects.

The story of Death Note revolves around a high school student called Yagami Light. His life changed when he saw a supernatural notebook that fell from the sky.

Re:Zero kara Hajimeru Isekai Seikatsu Suddenly, high school student Subaru Natsuki has been summoned to another world on the way back from the convenience store. With the biggest crisis of his life being summoned to another world, and with no sign of the one who summoned him, things become even worse when he is attacked.

Taken from AniDB - Once, there was a group of close childhood friends. However, by the time they entered high school, they had grown apart from each other.

The story picks up after what happened in season one. Things that are left unexplained in the first season get explained in the new season in three separate arcs.

Assassination Classroom is all about one thing - Assasination! Based on a Japanese manga science fiction comedy series written and illustrated by Yusei Matsui.

In a world where being born with superpowers called a “Quirk” is the norm, a quirkless regular middle schooler Izuku Midoriya dreams to join the band of heroes that he grew to admire and love, and save the world. Despite being constantly bullied by his schoolmates for having no quirks, he does not give up on his dream and turns his attention into meticulous data gathering about the heroes instead.

Osumatsu-san (??

Sakurai Yuki is a mysterious boy with a mysterious ability. He was found in the bushes as a baby and adopted by his current family.

In this lovely coming of age tale we see the young and adventurous Pico explore himself and his future during one mysterious summer. The series is composed of three OVAs that will keep you in tears and wanting more, each tale tells one story of Pico's summer as he tries to find who he really is and the conflicting nature we see between the departure of childhood and the entering of the teenage years.

On June 1983, Keiichi Maebara moves with his family to Hinamizawa, a peaceful rural village. He quickly befriends his new schoolmates Rena Ryugu, Mion Sonozaki, Satoko Hojo, and Rika Furude, usually spending their leisure time playing board games.

Sayonara Zetsubou Sensei is a slice-of-life "comedy":https://ani.me/anime/comedy featuring a high school teacher, Itoshiki Nozomu.