From MangaHelpers:

Scientists predicted an imminent meteor impact on Earth that would annihilate civilization, but contrary to their prediction, the meteor missed Earth. Though avoiding immediate destruction, humanity found that the meteor left behind something in its wake, something that would change the course of civilization forever: a new form of bacteria that ate through all known metals.
Facing this new era where all metals turn to ash, Jinkichi and his classmates will have to survive with little help from the Japanese government. Some of his classmates have already begun to understand that the norms of the past have collapsed, and lawlessness will be the new law. Jinkichi will have to protect himself as well as his classmates from the violence that ensues.

A boy from the future meets a girl from the present. Together they are destined to save the world.

Chigira Chiaki loved the tales of Kuroyukihime and Black Lotus her beloved elder brother told her about.

Returning to Japan after a long stay in America, Chiaki entered the Private Seibi Academy for Girls. There, she met the club members of the Enbuken and starts her journey into the Accelerated World.

Yanahara Taichi joined the Acting Club for the first time, but the only problem is that he gets too embarrassed to do anything! As the 3 girls in the Acting Club help him with his troubles, Yanahara eventually gains the courage to do something outrageous, but it only stirs up trouble!

From Senpai Scans:

Himesato Ui has just enrolled in her late mother's old high school, Shinomiya Academy, as a first year! Hatsu's mother was known as "Prima", the most beautiful girl, in the Academy. Ui was full of hope and expectations in enrolling in the Academy, but she was puzzled by the Academy's system of evaluation for students was by a point system. Furthermore, in the school, she met an unknown pretty boy?!

Watase Marin has a special ability- she is able to see ghosts. However, there's a catch. Ghosts are able to take over her body if she makes eye contact with them! What happens when a cute girl ghost decides to stir up some trouble and make her confess, then kiss Horin-kun, a guy in her class that she likes?

A teacher named Kadomae Kazuma has the principal's daughter Noeda Kanade for his class in a new school semester. At first glance, she appears to be a quiet girl, but she's awakening her aberrant love towards Kazuma? This is a psycho love story that accelerates thoughts and actions.

From Shoujo Sense:
Ryuuji is not your average high school student. With the family business struggling, and the atmosphere at home growing tense, he doesn't have time or the money for leisure—he's too busy with part-time work. So of course, when a talent scout offers him a place in the dog-eat-dog world of the entertainment industry, he turns him down. Except this talent scout is surprisingly persistent...

The first person who hurt me was of my own gender. Tsubaki is in the same class as Kaoru and Koutarou is the gentle big brother. What embrace their souls are desires and tenacity... They are hurt, they throb, they are drowned, they cry... They love with their body and soul, these are the real ordinary lives of these boys.

(Note: the title for this manga (Dousei Ai) generally means "homosexuality", however, the kanji used has a different meaning than the kanji that are properly used for spelling "homosexuality". The kanji for this series is the same for "living together" (同棲) instead of (同性) which means "same-sex")

From Mangabox:

Miyuki Nimi (15) has suffered the biggest embarrassment of her life! Now she’s moved as far away as she can get - to the rural prefecture of Shimane. But the wheel of destiny begins to turn as she meets the beautiful basketball player Shou Sakomizu! Watch as an average daydreaming girl challenges herself and the world! Laugh and cry with her in this Mangabox-original sports drama!

A new sci-fi manga, brought to you by the author of Hayate no Gotoku. About a boy who was brought up by a robot, and was bullied for that in the future where Earth was conquered by aliens, and people are just living boring lifes without any problems and ambitions.

From Evil Flowers:

The story of the growing up of a high school student that hates spring and has a phobia for flowers.

From MangaHelpers:

For Shinonome Keisuke, high-school student Kotone Tasuku is the only person in the world whom he can communicate with. Once a brilliant surgeon, Shinonome passes away at a young age, only to wander the world as a ghost, a ghost that only Tasuku can see and talk to. When an accident leaves Tasuku’s hot childhood friend Takeuchi Mai’s younger brother severely injured, the only way that he can survive is if Shinonome and Tasuku work together to become the most unusual and possibly talented pair of emergency surgeons the country has ever seen! [vyc]

A manga about funny and touching storys. 　　　　　　　　　　　 　 ∧__∧ 　　　　　　　　　　　 　 ( ͡° ͜ʖ ͡°) - Kipen 　　　　　　　　　　　　⊂　　つ 　　　　　　　　　　　　　(つ ﾉ 　　　　　　　　　　　　　 (ノ 　　　　　＼　　　　　　☆ 　　　　　　　　　　　　　|　　　　　☆ 　　　　　　　　　　(⌒ ⌒ヽ　　　/ 　　　　＼　　（´⌒　　⌒　　⌒ヾ　　　／ 　　　　　 （’⌒　;　⌒　　　::⌒　　） 　　　　　（´　　　　　）　　　　　:::　）　／ 　　☆─　（´⌒;:　　　　::⌒`）　:;　　） 　　　　　（⌒::　　　::　　　　　::⌒　） 　　 　／　（　　　　ゝ　　ヾ　丶　　ソ　─

Despite his one-sided love, a prince at school encouraged his crush to confess to her crush. But he also could not resist confessing to her. What will happen?

When high school student Sataki Tadashi was young he received the ability to deceive people from a supernatural being known as "Mujina." Three years later, he becomes an adjutant to the local police and begins to put his abilities as a con artist to use for the sake of "punishing evil that can't be judged by law."

The girl who drank Mímisbrunnr to become a god from human, and the person who made her a god Odin.

The adventure sets forth to stop Ragnarok from happening!

A 30-year-old business man makes a wish to be a girl. A chanting object runs toward him, and the next thing he knows he has became a loli elementary school girl.

Ch. 1 - Valentines Day rolls around again and Daisuke knows he won't receive any chocolate yet again. However, he opens his locker to find chocolate with only a mail address attached. Who gave him the chocolate and why? (Shounen-ai)

Ch. 2 - Kouki who has quite an innocent face, is actually the carnivore type. He fell in love with a herbivore type, who is the owner of the bar (aka Master) he is currently working part-time at. Every day, he tries to attack the Master with every chance he gets and the Master somehow manages to get away every time. However, suddenly receiving a ticket to go to the hot spring, will his chastity be safe this time as well…?! (Yaoi)

Ch. 3 - A story of unreciprocated love and friendship. Honjou with his one-sided love for Miki who in turn bullies him. Satonaka supporting a friend and questioning what love is. (Shounen-ai)

Ch. 4 - An editor and university literature student meet at a cafe over spilled coffee. Finding they share an interest in author Kurusu Takao, they begin meeting regularly to exchange books. The shy, pessimistic editor begins to fall for his cool and calm companion. How does their relationship develop? (Shounen-ai)