Rentaro Aijo was rejected 100 times in middle school. He visits a shrine and prays for better luck in high school. The God of Love appears and promises that he’ll soon meet 100 people he’s destined to date. But there’s a catch—once destiny introduces someone to him, the two must happily love each other. If they don’t, they’ll die. What will befall Rentaro and his 100 girlfriends in high school?
The 100 Girlfriends Who Really, Really, Really, Really, REALLY Love You is finished and has 12 Episodes. It is also Known as: 君のことが大大大大大好きな100人の彼女, 100 Kanojo, 100Kano, Hyakkano
Genres: Harem, Romance, High School, Comedy, Breaking The Fourth Wall, School Life, Parody
Top 10 Anime Like Kimi no Koto ga Dai Dai Dai Dai Daisuki na 100-nin no Kanojo
10. Kanojo mo Kanojo

The protagonist, Naoya, is a first-year in high school. He asks out Saki, a girl he has been in love with, and she agrees to be his girlfriend. He's currently on cloud nine. But then, a beautiful girl named Nagisa comes up to Naoya one day and tells him that she wants to go out with him. Naoya feels himself wavering because Nagisa is such a good girl, and he comes to a decision! A new kind of romcom from a rather unexpected decision is about to begin!
Girlfriend, Girlfriend is finished and has 12 Episodes. It is also Known as: カノジョも彼女, KanoKano, She is also my Girlfriend
9. Kanojo mo Kanojo 2nd Season

After their hot springs trip, Naoya continues his relationships with both Saki and Nagisa. Bringing along Milika and Shino , they embark on a summer vacation full of romance with a fireworks festival, camping, and Okinawa.
Milika's younger sister Risa also appears, making the romance in this neo-standard rom-com heat up even more. A season two filled with summer and swimsuits is about to begin!
Girlfriend, Girlfriend Season 2 is finished and has 12 Episodes. It is also Known as: カノジョも彼女 第2期, KanoKano 2
8. Kono Subarashii Sekai ni Shukufuku wo!

After a traffic accident, Kazuma Sato's disappointingly brief life was supposed to be over, but he wakes up to see a beautiful girl before him. She claims to be a goddess, Aqua, and asks if he would like to go to another world and bring only one thing with him. Kazuma decides to bring the goddess herself, and they are transported to a fantasy world filled with adventure, ruled by a demon king. Now Kazuma only wants to live in peace, but Aqua wants to solve many of this world's problems, and the demon king will only turn a blind eye for so long...
KonoSuba: God's Blessing on This Wonderful World! is finished and has 10 Episodes. It is also Known as: この素晴らしい世界に祝福を!, Give Blessings to This Wonderful World!
7. Date A Live

"Before the world ends, kill me or kiss me."
Thirty years before the events of Date A Live, an enormous explosion devastates east Asia and kills 150 million people. This is the first known "Spacequake", an inexplicable natural disaster that has since become commonplace. Fast forward to the future. High school second year Shidou Itsuka lives alone with his cute little sister while their parents are away.
What do these things have to do with each other? While rushing to save his sister from a sudden Spacequake, Shidou is caught in the blast and, in the midst of the chaos, finds a mysterious girl. It turns out that this girl is actually a Spirit, a powerful being from another world whose arrival devastates the surrounding area. Thankfully, Shidou is rescued by an anti-Spirit strike team... led by his little sister?!
This vicious task force is locked and loaded, ready to exterminate Spirits with extreme prejudice. But this violent method is not for Shidou. He discovers the one way to neutralize these Spirits peacefully: make them fall in love. Now, it's up to Shidou to save the world by dating those who threaten to destroy it!
Date A Live is finished and has 12 Episodes. It is also Known as: デート・ア・ライブ, Date A Live
6. The World God Only Knows

Keima Katsuragi, known online as the legendary "God of Conquest," can conquer any girl's heart—in dating sim games, at least. In reality, he opts for the two-dimensional world of gaming over real life because he is an unhealthily obsessed otaku of galge games .
When he arrogantly accepts an anonymous offer to prove his supremacy at dating sim games, Keima is misled into aiding a naïve and impish demon from hell named Elucia "Elsie" de Lute Ima with her mission: retrieving runaway evil spirits who have escaped from hell and scattered themselves throughout the human world. Keima discovers that the only way to capture these spirits is to conquer what he hates the most: the unpredictable hearts of three-dimensional girls! Shackled to Elsie via a deadly collar, Keima now has his title of "God of Conquest" put to the ultimate test as he is forced to navigate through the hearts of a multitude of real-life girls.
The World God Only Knows is finished and has 12 Episodes. It is also Known as: Kami nomi zo Shiru Sekai, 神のみぞ知るセカイ, Kaminomi
5. Giji Harem

Eiji Kitahama joins the drama club with dreams of having a harem like the ones from his favorite manga. Rin Nanakura, an underclassman, finds herself crushing hard on Eiji and tries on different personas in his presence to win him over. No matter how she acts, one thing is certain—her feelings for Eiji continue to grow stronger. Will she ever be able to tell him the truth and be herself?
Pseudo Harem is finished and has 12 Episodes. It is also Known as: 疑似ハーレム, Giji Harem
4. Gintama

The Amanto, aliens from outer space, have invaded Earth and taken over feudal Japan. As a result, a prohibition on swords has been established, and the samurai of Japan are treated with disregard as a consequence.
However one man, Gintoki Sakata, still possesses the heart of the samurai, although from his love of sweets and work as a yorozuya, one might not expect it. Accompanying him in his jack-of-all-trades line of work are Shinpachi Shimura, a boy with glasses and a strong heart, Kagura with her umbrella and seemingly bottomless stomach, as well as Sadaharu, their oversized pet dog. Of course, these odd jobs are not always simple, as they frequently have run-ins with the police, ragtag rebels, and assassins, oftentimes leading to humorous but unfortunate consequences.
Who said life as an errand boy was easy?
Gintama is finished and has 201 Episodes. It is also Known as: 銀魂, Gin Tama, Silver Soul, Yorinuki Gintama-san
3. Carnival Phantasm

How do you resolve a conflict between powerful spirits of famous heroes for a prize capable of granting any wish? Wage a war that will cost your blood, sweat, and tears? Too much work—how about a game-show competition instead?Carnival Phantasm takes a number of characters from Type-Moon's original works, and puts them in a variety of light-hearted scenarios which parody their respective series. Watch Lancer suffering due to his low luck stat, or watch the egotistical King of Heroes gladly kneel to a dominatrix King of Knights. Just remember to leave your sanity at the door.
Carnival Phantasm is finished and has 12 Episodes. It is also Known as: カーニバル・ファンタズム, Carnival Phantasm
2. Futoku no Guild

This is the youth I want? The young hunter with the most kills in the guild is Kikuru. He spent his entire childhood honing his hunting skills, and now all he wanted was to quit his job and turn back the clock to his younger years! Training his successor is Kikuru's top priority because he wants to retire as soon as possible! But for some reason, nothing but immorality has taken place under his cunning new guard! How will the youth of Kikuru grow? The newcomers' training in Kikuru's immorality has begun!
Immoral Guild is finished and has 12 Episodes. It is also Known as: 不徳のギルド, Guild of Depravity
1. Isekai wa Smartphone to Tomo ni.

When Touya Mochizuki is accidentally struck by lightning and killed, God apologizes by reviving him into a fantasy world and granting him one wish. Touya’s request? To keep his smartphone in the next world. In his second chance at life, Touya befriends many important figures, inherits the legacy of an ancient civilization, and travels around with incredible power and a harem of girls!
In Another World With My Smartphone is finished and has 12 Episodes. It is also Known as: 異世界はスマートフォンとともに。, In a Different World with a Smartphone.