Two short stories by Kaneko Aru

1. Himitsu to Mitsumete:
“I will treasure this forever” — classmates Hina and Mitsuki are secretly dating. Hina wants to have the popular Mitsuki all to herself, as a present, she gave Mitsuki and herself matching key straps. When Mitsuki touched the key strap, she felt something hard within it. This is... a wiretap!?

2. Kawarukoto:
Months and years pass by and various things change between them. But, some things didn't change. A story of two students who are childhood friends.

In a high school classroom ruled by a "queen," a new student struggles to fit in with the other girls. The class has bullies, victims, and onlookers. Will she be able to survive?

A shy girl, Takanashi, join a club named "Birdwatching Club"...
Wait? What kind of club is this?

A comfy birdwatching SoL, starts now!

Two people who met through ivies.
A relationship that started from a shared secret.
A man who became the home tutor of a shut-in high-schooler.
A teacher and student that chose to separate.

Honest, inexperienced, and pure through and through --
This is a collection of 4 of such love stories.

In 360 days, there were bright days and disappointment while I was staring at you. Though they were neighbors, Nino and Kira had never talked to each other.
But when Nino found out about Kira's secret, her life changes and everyday became more interesting!!
Their link will lead them to a love close to paradise.

Anzu goes to a preschool with her friends, the shy Koume and the eccentric Hiiragi. Together, they try to gain Anzu attention from their male caretaker Tsuchida, though he is clearly more interested in the pretty Yamamoto who supervises the class next door.

Rina and Hibiki are neighbours who attend the same school and don’t get along.

While pretending to be his girlfriend to chase off a stalker, Hibiki steals Rina’s first kiss. Rina is angry and Hibiki tells her that she should just fall in love with him.

After miraculously surviving a freak helicopter accident, Hikari "Picasso" Haruma finds that he somehow has the power to help people through his art. He is helped by his friend, Chiaki Yamamoto, who was killed in the helicopter accident, but came back as an angel. According to Chiaki, when the accident happened, both she and Picasso died, but she begged God to save him because of his wonderful talent. As a result, Picasso survived the accident on condition that he saves other people.

Basically, when he sees someone in trouble, Picasso's able to draw a picture symbolizing the person's problem and then enter that picture to see that person's hidden feelings, and use that knowledge to help them in the real world.

As long as you drink this medicine, there's nothing to be scared! Now, let's challenge everything that made you afraid before! It's... a wonderful feeling!

Daisuke Niwa is an ordinary, if slightly unlucky, middle school student. On his fourteenth birthday, he comes down with a 'condition' that has plagued the men in his family for three hundred years. When he sees his crush, Risa, he transforms into his alter ego, the phantom thief Dark. Unfortunately, when Dark sees his crush, Risa's twin Riku, he transforms back into Daisuke. The only cure for this craziness is if Daisuke can get Risa to fall in love with him and Dark can get Riku to fall in love with him. But that's going to be a problem, seeing that Riku hates Dark and Risa loves him.

The Whispering of the White Angel Maria and the Temptation of the Black Demon Maria?! The Exciting Daily Adventures between the 2 Marias with Completely Opposite Personalities! A Story about a
Love Triangle That Takes Place in a Women's Dormitory!

Masaki meets 2 girls. The sweet and innocent Mizuki Maria and the beautiful but mysterious Toumiya Maria. Although he thought feelings of love would probably start to grow as his dormitory life
continues, somehow, he finds it embarrassing to live in the women's dormitory.

Lee Jae Won, an 18-year-old student, starts to feel awkward towards a classmate of his, Han Ka Ram. Every time they meet, he feels nervous. Is it love, or..?

Touma Sou graduated from MIT, but he comes back to Japan because he wants to know how it feels to be a high school student. On the other hand, Mizuhara Kana is a strong girl who loves sports. Together, they are partners in solving cases that happen around them.

Won the 33rd Kodansha Manga Award for shounen in 2009 (shared with Fairy Tail).

XIANG Wei-er, who has exceptional grades and a sense of justice, upon transferring to a new school and class, got named by the teacher as a little teacher dedicated to guiding the "special students" in the class... Gosh! Before she can even adjust to the unfamiliar new environment, she has to first deal with a bunch of difficult people... a serious girl meets a strange handsome guy, and together act out a surreal campus love comedy!

From MangaHelpers:

Fish people have been welcomed to the town where the human girl Wakasa Otomi lives, and they are integrating well. The fish people can be identified by the physical marks of their fish species, though they take medicine to keep their lower bodies human rather than a fish tail. Otomi loves fish people, and is eager to meet as many as she can! One day, she meets a new transfer student, a lantern fish girl named Tsutsumi Anko. Anko is a bit self-conscious about being a deep sea fish, with a tail that is not cute like some other fish girls. At school, she and Anko deal with various fish problems that intersect with issues an ordinary human high-schooler would face. [tethysdust]

The year is 20xx, and Japanese men are a dying breed. At the end of World War III, Japan was hit by a Man-Bomb, which rewrote the DNA of Japanese men, weakening them and stripping them of their will to fight. Those that survived gave their lives to save their country. But the Spirit of Yamato still lives on... in the Japanese women!

Part of COMIC MeDu (Girls x Garden) shorts, chapter 15

Sasaki Ichika and Sasaki Umi are couple. Handsome boy and pretty girl, they are people’s admiration. But, both of them have some regrettable secrets...?

The sad growing-up story of a pair of orphans dependent on each other. "I want to protect you forever and ever, because we have no other loved ones in this world"

30 year-old Odu is feeling left out. His friends are slowly marrying off and with his tiny salary as a video store clerk, he can't afford to go on trips with them when they can all hang out. Oh, and just to top it all off, his popular friend Araragi just found out Odu's most embarrassing secret... Odu's still a virgin at 30, but maybe it's not so bad after all because Araragi's never been with a girl either?