She was the reason he didn't like getting involved with girls much because of an incident in the past. He meets her again and learns that just maybe she isn't so bad after all.

Chopin and Liszt - both great composers, friends, and rivals. Liszt, after Chopin's death, Liszt remembers their meeting, their friendship, their lives together, and the music they made.

Hinomiya is a quiet student who never says anything, but has a supernatural power. He saved Shijiro Sayu a number of years ago when she was falling, and since then she has considered him a friend. One day, an unnatural murder occurs, and a little girl escaping the killers runs into Hinomiya and Shijiro, with the supernatural villains not far behind!

The story is about Kusakabe Sakura, a second-year junior high student who, in the future, discovers the power of immortality. An angel named Dokuro is sent to kill him before he does so. However, Dokuro thinks Sakura can be spared from this sad fate, thus, she keeps him. Another angel named Sabato is later sent to finish Dokuro's dirty job. Pipiru piru piru pipiru pi! From Baka-Updates: From AnimeWaves: Pi piru piru piru pi piru pi~ Along with this mysterious melody, an "angel" comes to Kusakabe Sakura-kun's house and beats him to death. Her name is... Bokusatsu Tenshi Dokuro-chan!? From now on, the everyday fantasies of Sakura-kun's life will be replaced by events more strange and interesting than he could ever imagine... -------- In the future, a man named Sakura is destined to create the technology for eternal life, which (due to Sakura's lolicon tendencies) freezes all women's aging once they turn twelve. God refuses to allow this, so he sends his angels to the past to kill Sakura before he can do this. But one angel, Dokuro-chan, decides to try to change the future without killing him. Problem is, Dokuro is very temperamental, and is constantly killing Sakura (and lots of other people too) in incredibly bloody ways with her giant spiked club. Good thing she can bring people back to life - if only to grusomely kill them again the next time she loses her temper.

From ShoujoMagic:

Yori's attitude has changed. He and his twin sister, Iku, used to be inseparable as children, but lately Yori's been different -- eager to be apart from Iku. Iku worries that he hates her, but the truth is far more scandalous. Now, Yori would risk losing everything to have his little sister. Iku loves her big brother enough that she would never risk losing him, and so she'll do what it takes to keep them together... but Yori doesn't want to have her that way -- as a sister dedicated to her twin. Can Iku ever love Yori not as a brother but as a man?

Boku wa Imouto ni Koiwosuru received the Shogakukan Manga Award for shoujo manga in 2008.

From Neptise Scans:

Dracul's presence threatens humanity and the only ones who can stop them are the Exorcists, siblings bound by blood and granted the power to purge evil. The story centers around Vincent and Ryan and their struggle to become full-fledged exorcists.

In the years following a great civil war between the Light and Dark Dragon clans. The Light Dragons are dwindling, reduced to hiding in small villages. The protagonist is Ryu, a young Light Dragon who awakens one night to find his home set on fire by Dark Dragons. After his sister is captured in the attack, Ryu sets off to rescue her. In the process, he joins a race to uncover seven mystical keys, before the Dark Dragons can use them to unlock a goddess of destruction.

In recent years, more and more girls are experiencing the development of "tertiary sexual characteristics" during the later years of their puberty -- that is, the rapid masculinization of a certain part of their external genitalia. Ooi Haruka is one such girl, who has until now kept the changes in her body a secret from everyone but her family. However, after an embarassing incident involving the guy she's been crushing on in a crowded train, she wakes up to discover herself at school, surrounded by a group of students calling themselves the "Bra Girls (Swing Girls)." And they know her secret!?

Boys Be... (ボーイズ・ビー Bōizu Bī) is a manga created and written by Masahiro Itabashi and illustrated by Hiroyuki Tamakoshi. Three different Boys Be... manga series were serialized by Kodansha in Shukan Shōnen Magazine. In 2009 Kodansha announced a fourth series, Boys Be... Next Season, starting in the November 2009 issue of Magazine Special.

From Tokyopop:

An anthology of stories about ordinary high school guys and their relationships...or lack thereof. Boys Be...takes a look at the trials of love and loss from a refreshing point of view and often adds interesting insight into what a relationship is like from an average guys point of view!

From Anime-tion Scanlation:

At age 17, Nana still doesn't have a boyfriend. One day, she went to the beach and met with a cool guy. They exchanged numbers and texted but the cool guy turns out to be her younger brother's friend who's 5 years younger?!

From Shoujo Manga Maniac: Kojima Mitsu (aka Honey) is in high school, but she's so small that she looks like she's in elementary school! One day while she is is changing into a maid uniform for a school event (with not much success...the uniform is too big for her), she find a little bat blocked by the window and helps it. Suddenly an awesome guy appears in front of her! He is a vampire and as thanks for saving his "toy," he helps turn her into an adult (with a kiss)...

from -dokidoki- :
Ichirou's best friend Naoto's noticed that he's been acting a bit unusual since summer vacation. With a bit of best-friend solidarity, Naoto squeezes out the tale of Ichirou's secret summer fling: a sexual encounter with a mysterious stranger fleeing from a rainstorm. Naoto is, naturally, scandalized, but not half as scandalized when he and Ichirou run into the summer fling again at a school festival...

As if a guy falling in love with another guy wasn't complicated enough! How about when that boy's already got another guy after him? Throw a live-in cousin with an aggressive crush and the world's cutest lovestruck best friend into the mix and the situation gets rather convoluted, even by Koide-standards.

From Fantasyshrine:

Under the cover of the night
In the silent harbor
Two lovers, lips sealed on each other, reunited after two long years…
True love never dies…

Osamu Tezuka’s vaunted storytelling genius, consummate skill at visual expression, and warm humanity blossom fully in his epic of Siddhartha’s life and times. Tezuka evidences his profound grasp of the subject by contextualizing the Buddha’s ideas; the emphasis is on movement, action, emotion, and conflict as the prince Siddhartha runs away from home, travels across India, and questions Hindu practices such as ascetic self-mutilation and caste oppression. Rather than recommend resignation and impassivity, Tezuka’s Buddha predicates enlightenment upon recognizing the interconnectedness of life, having compassion for the suffering, and ordering one’s life sensibly. Philosophical segments are threaded into interpersonal situations with ground-breaking visual dynamism by an artist who makes sure never to lose his readers’ attention.
Tezuka himself was a humanist rather than a Buddhist, and his magnum opus is not an attempt at propaganda. Hermann Hesse’s novel or Bertolucci’s film is comparable in this regard; in fact, Tezuka’s approach is slightly irreverent in that it incorporates something that Western commentators often eschew, namely, humor.

Note: Won the Bungei Shunju Manga Award in 1975 and the Best U.S. Edition of International Material for the Eisner Award in 2004 and 2005.

The hero in this manga has a split personality and each personality has its own lover! Aki is a right-hander and seme (but he denies his homosexuality); Ao is a left-hander and uke (acts as the "bad guy" and reduces Aki's excess stress). One personality is afraid the other one will take over and destroy it. In the end, which will win? Ao feels he will be deleted by Aki and asks Sayuu to help him...

Two twin brothers Ry and Key were trained in martial arts since childhood by their Martial Arts father, "Rokuu Riley" as they are now young adults a tournament begins in their city and they feel they are called to accomplish something much greater in life. And in their own ways they will not stop until they have succeeded no matter what challenges, threats or obstacles come into their lives.

Tsubamegaoka Private Academy - All Girls' High School, located just inside the city and has clubs a plenty. From the common ones to some freakishly impressive ones, it varies greatly. It's always okay to make one, no matter what kind of club. It's not uncommon to see students join this school for the sole purpose of making a new club. But what happens when five girls want to make a club and only one new club is allowed? Cahe Detective Club happens!

Tomoe Tatsumi is a freshman attending university in Tokyo. Life couldn't be better: he's living in a really nice apartment for less than most people pay for a single room. This is all thanks to Mitsugu Kurokawa: salaryman, landlord, and (hopeful) lover.

It is due to Kurokawa's generosity that Tatsumi is able to live in Tokyo on such a tight budget. Kurokawa's intention is clear: to love, honor, and cherish Tatsumi until his dying days! And if big brother Souichi Tatsumi has his way - that day will come sooner than not!

For Kurokawa, progress can only be made by "challenging the impossible...." And thus, Takanaga sensei introduces us to her charming romantic comedy, Challengers!

- DramaQueen

The main couple from Koisuru Boukun also have a few short chapters through out the manga that take place before Koisuru Boukun starts.

Ginta's father works at a cellphone company called "Choto Bank." Their new cellphone is a humanoid cellphone. Gina's father sent his son a prototype version of the humanoid cellphone, but Ginta's sister unexpectedly made some "changes" to the new cellphone and due to that it makes countless mistakes. The cellphone humanoid, named Momoko, slips on flat surfaces, rips Ginta's jacket, turns a jacket into a puzzle, and trips and nearly kills Ginta when a pair of scissors slip out of her hand. Ginta asks himself, "Will I live long in this condition?"
{Notice: This manga is different from traditional manga. Instead of reading right to left, it reads left to right.}