Highest Rated Manga

Souten no Koumori is a oneshot by the mangaka of Fullmetal Alchemist. It is the story of a shinobi, Henpukumaru, who awakens in an enemy's mansion. She is introduced to the future master of the mansion, Chiyozuru. Chiyozuru is able to get the unemotional Henpukumaru to smile and react differently than she normally would. But, one night, there is an attack by Henpukumaru's former allies...
(Source: Illuminati-Manga)

Junior high school student Yamada hates bothersome things like studying, eating, and bathing. When he discovers he can jump through time, would he be able to find the way to a perfect life?

Lead character is a naive boy who's fallen in love with an older girl who everyone considers a genius writer. He's so in love in fact, that he has forgotten about his secret hobby for the last 2 months. His secret hobby is that for the past 10 years he has been writing the "character profile" of a single girl. Her birthdate, personality, hobbies, conversations, etc.... is all recorded in a large pile of notebooks. All this time this fictional girl has been his friend and lover, but now that he is in love with a real girl he decided to throw them all away. In order to "purify" the notebooks, he decided to burn them at a nearby shrine. To his surprise, the sempai he's in love with was also there. It starts to rain and as they talk the girl confesses she's having trouble writing her novel due to inexperience. As the storm gets even stronger, the lead character believes that since she confessed her "weakness" to him it is ok for him to show her his own "secret". Filled with courage, the boy opens the bag where he brought all the notebooks... except that instead of notebooks, the bag now contains the girl (naked of course) he's been creating for the past 10 years!!
(Source: Baka-Updates Manga)

This is the mysterious story of Futaba Kazuma's first patient. At 18, Futaba Kazuma went to school to get his qualification in clinical psychology. While attending school, he boards at a creepy mansion, which even has a butler. Also living there is a strange young woman called Emiru. She is suffering from a terminal illness of the heart --- despair. This deep psychological problem has eerie physical effects as well: her hair has turned white, her body temperature is well below normal, and her blood pressure is also bizarre. No psychologists or counselors have been able to help cure her of this problem. Will Kazuma be able to determine the cause of Emiru's despair and save her before it's too late? [tethysdust]
(Source: MangaHelpers)

Shiori's dad remarries and she couldn't be happier. Not only has she gained a new mom, but a hot, older, yet sadistic brother as well?!

Satake Kou attended the wedding of his sister unknowingly that he will be reunited there with his cousin, Fumihiro, who used to be a very dumb fat guy, then transformed into a charismatic prince! Kou became undeniably self-conscious about this while he is not aware of Fumihiro’s high regards towards him since they were little. And in their reunion, Fumihiro’s admiration has turned into something complex. How would Kou respond to Fumihiro’s feelings?
(Source: Girls' Generation Scanlations)

1. Kingyo Sukui
2-4. Derashine no Hana
5. Komukai-ke no Jijou (The Komukai Household's Circumstances)

There is first time at everything, and you don't know anything about it. Not about your partner, not about yourself and even how to advance in love. In a certain port city, energetic high schooler Kana, and firm high schooler Takagi lives. Two of them experiencing first time at every thing they do. Author of "Smash!", Saki Kaori presents, Hajimete Datte ba!. A heartful love story has now began.
(Source: jCafe24)

1-2. Nise x Koi Boyfriend
3. Yowamushi Kareshi to Rokudenashi (A Cowardly Boyfriend and a Good-for-Nothing)
4. Kimi to Boku de Chouchou Musubi wo (A Ribbon Made of You and Me)
5. Usotsuki to Happy End wo (A Happy End with a Liar)

It was in 1946 that Earth learned of the existence of other worlds. As expected, many countries immediately tried to send people into the other world, hoping to obtain vital resources or mystical treasures. None of them came back.

And to be fair, Souya never expected to be one of those explorers. But here he was, accepting an offer by a shady company to get enough money to save his little sister. Launched into another world, he soon finds that his journey will be a hard one - not only have his teammates gone missing, but a majority of his food and weapons supply was destroyed in the transfer.

The only way left to go is forward. With only an AI companion to guide him, Souya ventures forth, hoping to find something worthwhile that will justify sending a rescue party to save him - if such a party comes at all.

(Source: MU)

This is a one volume work which consists of 2 separate and quite long stories. The first one is science-fiction related and is... quite eccentric. The second one however is more down to Earth.
[From Dragon Voice Project]

Itou Katsuya has been living with his guardian, a young man named Tooru, after the death of his only parent, his mother. It seems like Katsuya is having problems recalling the incident and couldn’t even remember how she died in the first place. To makes matters worse for poor Katsuya, he harbours conflicting feelings that are beyond what a son would normally feel for a father. Thus, life with Tooru during his puberty is pure torture. One day, he met a man claimed to be his deceased mother’s old friend. He was told that his mother perished in a hit-and-run accident and that even until today, the culprit hadn’t been caught yet. Katsuya embarks on a journey to find the killer while battling his sinful feelings for his foster father, Tooru…
(Source: Echochi Scans)

Short story about a girl with a monster face.

The love story of a little erotic mermaid begins...

Kael (a.k.a. Ryu Shiho) was a menace in his angelic form, harassing other angels whenever he got the chance to. Therefore, the heavenly fathers decided to expel him to the human world, hoping that his behaviour would improve. But... They guessed wrong. His attitude didn't get any better at all, and to top it off, humans now call him "Lucifer" because of his evil deeds and his scary eyes. If he ever wants to see the doors of heaven open up to him again, he has to perform a hundred good deeds... Will this task prove to be impossible?
(Source: Easy Going Scans)

The story of different individuals that have a certain grudge access the Hell Hotline (Jigoku Tsushin) to enter the name of those they want revenge on. Enma Ai, the hell girl, takes on the revenge for them in exchange for eternity in hell after their death. (Source: ANN)

Tadashi is in his second year of junior high school and is a member of the handicraft club and loves nothing more than knitting. Unfortunately he's in secret relationship with Saya, the member of a notorious all-girl gang, who says she will kill him and herself if anyone is to find out about it.