Tsubasa gains two brothers after his mother remarries and that is when his "normal" life goes up in smoke.

From The Back Door:

Shiba-kun is Kishitani Shougo-kun's muse. He thought it was mutual love, but Shougo has started acting strange...?

A romantic comedy involving Souji Shirosaki a student, who is in high school, whose personality can not leave out people in need. And Ichino Moritsuka, 16, a friend in the same class as Souji, who lives alone in an apartment near the mountains. Together, they discover they have strange psychic powers, founding a club game.

Ken is a modern-day chef who wakes up one morning in war-torn 16th century Japan. Faced with an impossible situation, he does what he does best – he cooks. Soon, word of his wonderful food reaches the capital, and the ears of warlord Oda Nobunaga, who immediately orders Ken to cook for him. What will happen to Ken as he finds himself stumbling around in an era he doesn't belong?

From Damn Feels! x Paperdolls Project x Winter Translations:

Yusu is a fun-loving girl with a casual sex life but likes to sleep alone at night. When an innocent colleague, Seta, catches her attention, she decides to make an exception.

12-year-old Aoyagi Ritsuka is a troubled child. He has no memories of his life until the age of ten. His excitable mother physically and verbally abuses him, demanding that he return the "real" Ritsuka to her. For the past two years, his older brother Seimei had been his devoted friend and protector: the only one who accepted Ritsuka's "new" self and who could stop their mother from abusing Ritsuka.

In a talk the brothers had one day, Ritsuka learns Seimei's real name is Beloved, and although Seimei refuses to explain why he would say that, Ritsuka thinks the name fits. Soon after that conversation, Seimei was found dead under mysterious circumstances.

A while later a college student named Soubi appears before Ritsuka, claiming to have been Seimei's friend. He tells Ritsuka that Ritsuka's real name is Loveless, and that like his older brother he is a sacrifice. Ritsuka has inherited Seimei's fighter, Soubi himself. Ritsuka finds himself drawn into a bizarre secret world where teams of two—fighter and sacrifice—engage in combat with another team using the fighter's verbal spells that manifest in local space and, for every round lost, create increasingly painful bindings on that team's sacrifice.

As his involvement in this new life deepens, Ritsuka unearths many shocking facts about himself, Seimei and Soubi, plus the mysterious organization related to the combat, Septimal Moon. He resolves to discover the truths behind his brother's murder and his own unexplained amnesia.

Story 1: After his girlfriend was murdered, Takashi brings the killer, Kouichi, back to his apartment in order to carry out an unprecedented form of "revenge". By treating the man he should hate gently, what does he hope to accomplish?

Story 2: Takashi's doctor and high school best friend Souichi is keeping a hapless amnesiac teenager at his clinic, and Takashi's determined to discover the secret behind Souichi's bond with his patient.

Story 3: Takashi is a host by night and an aspiring fantasy author by day. When he moves in next door to a self-professed narcissist, will something about his life change...for the better?

Story 4: Takashi confesses to Souichi, but is rejected. It's okay, though, because he won't ever stop watching the love of his life...

N/A

In a parallel 21st century Japan, an enemy with incredibly advanced technology attacks mainland Japan from Hokkaido, shattering the Japanese Defense Forces and their American allies. Japanese military scientists use what enemy technology their troops can capture to create their own mecha to fight off the enemy's advance.

But what does this have to do with a boy named Yuu, a mechanical genius with motion sickness, and his separation from his younger sister for over 7 years? Why does she suddenly appear after all that time, dressed as a miko and shadowed by a fox, at the temple where Yuu lives with his uncle? Is she who she says she is?

She reappears in his life just as military secrets and his own secret burden of a psychic power shake up his socially estranged life. And then the war advances...

From Yaoi Is Life:

In Spring of his junior high 2nd year, Saitou got in the same class as Suzuki. Receiving Saitou's help while being bullied in first year, Suzuki smiled shyly while thinking, "what if we became friends". Saitou is becoming more and more conscious about Suzuki and their relationship starts to change?!

Including the continuation of Bokura ni Matsuwaru, etc. (You & Me, etc.), Bokura no Ashita no Houteishiki (The Equation to Our Future), and Sono Te Kara Tsutawaru (I Can Tell by Your Hand).

A girl named Hiromi dreams to become a prince. One day a cute girl named Juri transfers into Hiromi's class. Due to Hiromi's cute looks she is bothered by Hiromi's classmates. Juri blatantly rejects Hiromi's classmates' invitation to join their group and she earns some scorn from Hiromi's friend, but Hiromi doesn't wish to bother Juri.
After Hiromi takes initiative to speak to Juri, Juri becomes attached to Hiromi and nicknames her Romeo.
Thus the story between Juli/Juri and Romeo/Hiromi begins.

A weapon only permitted to a chosen few, and two men who use their weapons for two entirely different purposes.

From FairyFly:

Tsuzuki Rika has just started her high school life, hoping to have a "sweet love". But she fell in love with a senpai, who's in love with another girl... no matter how hard she tries, her love is unlikely to be returned... sweet, yet painful adolescent love.

Enter Hikawa Naomi, son of a music critic and Ebisawa Mafuyu, a young prodigy pianist who suddenly disappeared from the music world.

The story is set in the Edo period of feudal Japan. It revolves around Yamada Asaemon, nicknamed Kubikiri Asa (literally "Neck-chopper Asa", often transliterated as "Decapitator Asaemon"), a ronin who is responsible for testing new swords for the shogun. The character is based on a real-life line of sword-testers who served the Tokugawa Shogunate up to the early 19th century. -- Wikipedia

Teenage magician Kaito Kuroba has a secret identity: that of Kaitou KID, a famous internationally-known and wanted "phantom thief". Kaito took the identity after one day discovering that his late father was the original Kaitou KID. Later on, he discovers his father, who died from an 'accident' during a magic trick, was really murdered because he would not steal the jewel Pandora for an evil organization. As Kaitou KID, Kaito tries to find Pandora before that organization that killed his father do, and destroy it, leading Inspector Nakamori and his task force on the wildest jewel heists imaginable!

From Yen Press:
This seductive, paranormal romance demonstrates that love can have a way of coming back and biting you--in the neck! It's a lesson that Kana Takachiho learns all too well through her relationship with Aki, her childhood friend and pure-blood vampire!

Hime is a natural blonde and with that comes basic expectations: for her to excel at everything and to speak English proficiently, and unfortunately to be a complete ditz and have many boyfriends. When Minami catches her studying English by listening to 'English for Dummies' the two become friends. But soon Minami falls prey to the rumors and distances himself from Hime. Will the two ever be able to regain their friendship?

From Angry Fox Scans:

The story is about the Himenokouji twins named Akito and Akiko who got separated due to certain circumstances and after years of living apart they suddenly began to live under the same roof once again. Things were fine at first until Akiko began expressing her love for her older brother. Now Akiko must fight to defend her extraordinary love for her Onii-chan as she battles against all odds and three other girls who are after her beloved Onii-chan.