From Del Rey:

Lucia is the new girl at school. She and her sister run a public bath that's all the rage. When Lucia meets a terrific-looking surfer boy, there's just one little problem: Lucia is a mermaid-not just any mermaid, but a princess on an important mission to save the seven seas from an evil force bent on taking control of the marine world. Such a responsibility doesn't leave much time for romance. But Lucia vows to protect her world and win the heart of handsome Kaito.

Tankoubon #7 includes 3 short stories

Get Nude
Moonlight Goddess Diana
Cherry Blossom

On a rainy summer evening, a woman and a "dog" happened to meet each other and life has never been the same since.
What new adventures await this unusual duo as summer turns to fall? [Kodansha]

An ordinary high school student, Satou Ichirou, was born to a demon father and a human mother. Together with his best friend (← one-sided), the beautiful grim reaper Freddie, and the money-obsessed Rinto, who looks almost like a rabbit, he is enjoying his high school life in the demon world today!

In a future not too far away, androids that look exactly like humans begin to spread across the world. The android production company SA Corp. produced Giftia, a new kind of android that has the most amount of emotion and human-like qualities out of any other model ever seen. However, due to problems in technology, the androids have a service life, and once they pass that, it gets pretty bad. For this reason, SA Corp. creates a terminal service in order to retrieve Giftia that have gone past their service life. A new employee at the terminal service named Tsukasa Mizugaki forms a team with the Giftia Isla to retrieve the other androids.

This series features Michiru Kinushima as the protagonist.

The main character, Hazel (Maron in the original Japanese version), sets off to catch Pokémon after a scientist named Grandpa agrees to make a love potion if she catches Pokémon. Hazel is after the heart of a boy named Almond. Most of the Pokémon in the manga series can speak a human language. The manga's plotline has nothing to do with the original video games. Taken from Wikipedia.

Satou Shiki, a university student, was suddenly stabbed by a slasher only to be reincarnated in Labyrinth City. In this other world, he who has awakened to [Appraisal] and [Healing Magic] does a lot of “things”.

A story about a married couple who've abstained from sex until their wedding night. But on their wedding night, the wife turns into a little girl.

But that doesn't stop her from wanting children.

A romantic comedy with a distinctly Japanese flavor. Next-door neighbors Chiro and Ritsu have been best friends since childhood. Ritsu, the son of a family of traditional nichibu dancers, is thrust into the public eye as his career takes off, and his growing fame begins to test the pair’s friendship. And now the twist: when a wish made at a shrine actually comes true, Chiro and Ritsu find themselves inhabiting each others’ bodies. A further complication arises because Ritsu is not just a dancer, he is a famous onnagata, or female impersonator, popularly known as the “Courtesan Prince.”

Ayaka Sakurai is an excellent student, but she gets nervous at exams, so she had to settle for a lesser high school than she expected. However, her teacher offered Ayaka a recommendation letter to the school of her choice if she could convince the delinquent girl Sora Honda to come to school. When Ayaka visited Sora at her home, Sora was quite willing to go back to school, if Ayaka would agree to do one thing...

Gordon is an unsociable middle-aged man driving his food truck through a world buried in sand. One day, he meets a girl named Arisa sleeping stark naked in the middle of the desert. While Arisa wolfs down any and all food she can fit in her mouth, a mysterious armed group seems to be pursuing her, too.

In the second half of the 2nd century, Naru, a warrior from the state of Koryo, was sold as a gladiator-slave to the Roman Empire and waged a desperate struggle for freedom.

A Lovey dovey daily life with ara~ ara~ wife who can do time leap

Tokina is a self-proclaimed Timeleeper who loves to pamper her husband, Nobumichi. But today, there's something wrong with Nobumichi! While her husband accepts her sweet behavior without embarrassment, Tokina's flirting gradually escalates...?

Maa-chan's Diary is the first manga created by Tezuka Osamu. He authored it in 1946, and it ran in Shokokumin Shinbun (Mainichi Elementary Schoolchildren's Newspaper).

It follows the life of a little preschooler named Maa-chan, who lives in post-war Japan.

The Young Master treads carefully, as his new maid is doing stuff for him that makes him flustered and uncomfortable. What is this teasing woman scheming!? ...Is it love!?

From Kagami:

With their father going away for an extended time without any warning whatsoever, the Yamadas have to get by on their own. Tarou, the eldest son, carries the biggest burden of all: supporting his large family.

Of course, Tarou's money problems are overshadowed by his appearance, as many girls and even guys trample all over each other to get his attention. Experience the joys and tears of being poor AND beautiful through the life of the Yamadas!

From Tokyopop:
After an imprisonment of five days in Heaven, which equals five years on Earth, Soma is sent to the human world to recover the lost sword. Under the supervision of the heavenly princess Aroomee, Soma must deal with the chaos that his deeds have produced.

Cool beauty senpai x virgin-kun kouhai?!
Aiming to get a girlfriend with his college debut, what appeared before Kouhai-kun was a beautiful, smoker Senpai?!
Generating a lot of buzz on Twitter and Instagram, this clumsy love comedy starts its serialization!

Himawari-chan, the Little Princess of the school-bag planet called "Girl's Elementary School Star" at the edge of the universe, has come to the Earth to find a husband.
With the help of her maid, Sakura, Himawari-chan will start developing a bond with the earthlings.
and with the big-breast Osananajimi, Kaguya as an extra, the Kawaii Bishoujo meteor love comedy now magnificiently dispatched.

Sunami Yuuko is surrounded by lesbians at her school.

Yu XiaoBei, a worker, in order to pay for his sister’s surgery, he chose to enter the mysterious arena and learned that if he survived till the end he will be able to control the world’s economies. Unexpectedly, Yu XiaoBei would face his treacherous competitors, caged in with a monster, and participate in a thrilling death game. To his delight, an unexpected gift made the protagonist determine that there was a chance to achieve his goal!