Let's Nupu Nupu (1998)

High school can be hard enough with just academics alone, but when love enters into the picture, it can unravel into a comedy of errors. Tenma has fallen for oblivious Karasama and class delinquent Harima has fallen for Tenma. While this unlikely trio winds their way through the pitfalls of love and high school life, their friends and classmates become caught up in the chaos.

When lazy, erotic-game loving Mahiro Oyama is transformed into a girl by his younger scientist sister's experiments, he becomes determined to change back, only to recognize that with his new opportunity, he may want to turn his life around.

Elementary school student Hotaru Ichijou has moved with her parents from Tokyo to the middle of the country. Now she must adapt to her new school, where there are a total of 5 students in the same class who range through elementary and middle school ages. Join their everyday adventures in the countryside.

Shikimori seems like the perfect girlfriend: cute, fun to be around, sweet when she wants to be… but she has a cool dark side that comes out under the right circumstances. And her boyfriend Izumi loves to be around when that happens!

A teacher takes all aspects of life, word and culture in the most negative light possible.

For high school students like Shouichi Kamita, university entrance exams and the future are common concerns. It is also during this time in life that a mysterious emotion that vexes people of all ages may begin to weigh upon one's mind—love. At this point in his teenage years, Shouichi finds three girls he could see himself having a future with: the ever-cheerful Hikari Tsuneki, who teases Shouichi without mercy, but actually has a softer side; the competitive gamer, Tooru Miyamae, who has difficulty communicating with others; and Shouichi's childhood friend, Kyouko Touno, the sometimes immature shoujo manga enthusiast. Seiren follows Shouichi's relationships with these three girls across three separate arcs, as their feelings grow from mutual interest and blossom into something more beautiful.

Misaki Ayuzawa is the first female student council president at a once all-boys school turned co-ed. She rules the school with strict discipline demeanor. But she has a secret, she works at a maid cafe due to her families circumstances. One day the popular A-student and notorious heart breaker Takumi Usui finds out her secret and makes a deal with her to keep it hush from the school in exchange for spending some time with him.

The year is 1991 and 6th grader Yaguchi Haruo only has video games to live for. He's not popular in school and he's neither handsome, funny, nice nor even friendly. The only thing he has going for him is that he is good at video games. One day at the local arcade, he plays Oono Akira, a fellow classmate but who's popular, smart, pretty and a rich girl that absolutely destroys him at Street Fighter II. Not only does he lose to her 30 times in a row, he can’t beat her at any game. Haruo can’t seem to shake Akira off as she follows him from arcade to arcade everyday after school and beats him every time. As weird as it sounds, the odd couple begins a strange bond and friendship.

Unique monsters that suddenly began to appear all over the world from the beginning of the 20th century. At first, human beings tried to resist, but in the face of their enormous power, they came to the conclusion that complete extermination was impossible, and concentrated their wisdom on monitoring and analyzing monsters. The United Nations Kaiju Observatory (commonly known as Coulons) was born. Leading by the indomitable leader Yuichiro Kaido, the authority of monster ecology, Toji Kobayashi, the talent of monster function analysis, Claire Coleman, the maverick of monster disaster prevention, Kenny Mikoshiba, and the nobleman of monster strategy, Nikita Tarkovsky. A new generation Lulu de Picard who paved the way for monster linguistics, and Guillermo Marquez, a monster life science tycoon. Experts in monster science monitored and analyzed hundreds of monsters, and continued to explore a world where monsters and humankind live together.

Ryota Sato gets the surprise of his life when he's suddenly transported into another world and nearly clobbered at the hands of the young, pretty adventurer Emily Brown. This new world revolves around defeating monsters and profiting on whatever they drop—food, money, items, etc. Unfortunately for Ryota, he has no skills to speak of...until he learns he has the ability to get rare drops! Suddenly his luck turns around...or does it?

Star pitcher Haruka Kiyomine and skilled catcher Kei Kaname were an unstoppable duo—until Kei was hit with a curveball: amnesia. Now they have a second chance to play at a no-name high school with a team of past rivals. Can they overcome Kei’s memory loss and rekindle their baseball dreams? With hilarious hijinks and fierce competition, get ready for a strikeout.

Forced to give up playing guitar when her mother remarried a rich real estate tycoon, Lilisa Suzunomiya's passion for music reawakens when she meets Otoha Kurogane, her seemingly perfect classmate who is secretly a heavy metal drummer!

The adventures of Iyami, a con artist who's always looking for a quick buck, and Chibita, his short-statured kid partner-in-crime, as they make trouble for their town and constantly cause friction with the Matsuno sextuplets, a clan of rowdy identical 10-year-old brothers led by the eldest, Osomatsu.

The Fountain of Life is the source of all life forces in the Bosco World. Princess Apricot, who is supposed to become Queen of Fountainland-the Guardian of the Fountain of Life-is kidnapped by villains who aim to rule the Bosco World. If Princess Apricot can't take the queen's throne by the next solar eclipse, the Fountain of Life will dry up. The animals living in the forest of Bosco, including Frog, Otter and Tortoise, decide to help Princess and take her to Fountainland in order to protect their peaceful life in the Bosco World. So begins the journey in a balloon full of dreams, hope, adventures, and love!

Arima Takuya is a young student whose father, a historian who has conducted various researches, disappeared recently. During a summer vacation Takuya receives a peculiar package from his missing father, along with a letter containing information about the existence of various parallel worlds. At first Takuya doesn't take it seriously, but soon he realizes that he possesses a device that allows him to travel to alternate dimensions. Is his father alive, after all? If so, where is he?

The story is set in Japan in 2020. The story centers on Shin Hazama, and a version of himself who led a different life in another Japan appears. A crack opens in the everyday life that he thought was impossible to change. Boys and girls have to decide what to think and choose when the world changes completely. The battle with another world and another self begins.