Her secrets that only he knows...

Itsuki Hayashi, a timid otaku who has just entered high school and wants to become a manga artist, is sitting next to a very scary-looking Yankee JK! The way she talks, the way she looks, the way she acts, everything about her is terrifying... But as it turns out, she has a lot of unexpected weaknesses!

Leader of hero squadron "Gerato 5 (Five)" aiming for world peace, Aikawa Fudou and fight leader of secret society "Gecko" aiming to conquer the world, Magahara Desumi ... there was a deep “fate” between the two of the organization ... !!

Mitsuru Masamune, a mild mannered high-schooler who hasn't had much of a presence since his birth one day had a roommate move in.
A silver-haired, blue eyed exchange student all the way from Germany, Leo.
They had a dignified appearance and had a cool way with their words with no room for timidity.
He used to think that Leo was a being far off from someone like him till he got to know about a secret of his after which their relation got a bit more special...?!

The manga centers on 35-year-old businessman Ryūichi Yamadera. Ryūichi travels around the country on business trips, and his sole pastime is trying different foods at local restaurants. He also ends up sleeping with the various married women he meets at the restaurants, while also being married himself.

The succubus' target was a second grader!? So begins a seductive comedy with a clumsy succubus and a mature grade schooler!

Contrary to her appearance, Hatsuse Sakura is an idiot. Because of her, "honor student looks," she is appointed as the class president. To meet up to everyone's expectations, Sakura tries her hardest, however, for some reason since then Shinokura, who is rumored to be a delinquent, has been starting to approach her? The romance of two awkward people.

From the author of Denkigai no Honya-san and Dansai Joshi comes a short-length comedy about Matsuboshi Raidou-kun and his seatmate Aharen Reina-san, who has problems determining how chummy she has to be when approaching other people. Get up close and personal with the small, quiet but unfathomable girl, Aharen-san!

From Easy Going Scans
Everyone knows women are tricky beings, with layers upon layers of secrets they hide, but there are some secrets women must risk everything in order to keep hidden! These women with such hidden secrets are being revealed in the series, "Dear, Only You Don't Know!"

In this world, there exists monsters called Kajiki. They are huge and scary, for they were created to be eaten by gods. However, they are also very delicious…! Let the battles between monstrous food and a young chef begin!

Tamaki, a girl who died in an accident, became a zombie and crawled out of the grave to convey her feelings to her childhood friend. Shin, a lonely high school boy, remains confused by the fierce attack of Tamaki...!

A surreal romantic comedy!

After years of being unlucky with girls, Ishimaru Daito only wishes to enjoy his high school life with a normal, cute girlfriend. However, after losing a game to his two new seniors Sasahara Kiyoka and Tomochika Asami, he is forced to join the < Humanism Studies > club which is actually a torture studies club. Will Ishimaru get the normal high school life he always wanted?

From MangaHelpers:

The age of the maid robot has begun! Now, each family has at least one maid robot in their household, and Souta's family is no exception. Souta grew up with his maid robot since he was a young boy. He has learned that there are people out there that have fallen in love with their maid robot, but he is determined to not be one of those people.

His maid robot, Tsukushi, will do whatever it takes to make her master happy!

4-koma manga by Arai Cherry, depicting the everyday life of elementary schooler Mio Maeda.

An official Mairimashita! Iruma-kun anthology series, featuring stories of Iruma Suzuki and friends's adventures as students of Babyls Demon School.

"What if my girlfriend had big breasts..." A gamer's girlfriend gets violently attacked, or a dry cleaner's girlfriend gets violently disturbed!? A pretty erotic anthology comic for boobs lovers

Cover Illustration (Umagome Rakure): https://twitter.com/UMA_raclette

A romantic comedy given by the sword of the evil!! The secret of Hikari, a student council president who has excellent grades. That cannot be changed because of their illness. The hero who knew it had to help her change!

Yonaga-kun, a second year high school student, has someone on his mind. His seat neighbor, quiet and tidy Nemukata-san. He loves seeing her glimmering eyes through her glasses as she reads a book. However, one day he finds that same girl trespassing in his room as "Dorobou-chan"!?

A bright, fun, and not quite criminal, romantic comedy ★

(Source: Shounen Magazine, translated)

The near future, in a quiet seaside town. Yoshioka, who had recently lost his wife, just wants to spend the rest of his days in peace. However, Yoshioka's children, worried about their father's health, sent a housekeeping robot to help him. Yoshioka's quiet life is now changing.

Comic Maplestory is an ongoing children's manhwa that has about 90 volumes as of December 2017. The first volume was released in 2003 and in this series, you will meet characters of the Maple World universe! Follow the protagonist Dodo and his friends as they go on various quests and learn the dark secrets of their world.

Fuwa Wataru is a high-school age boy who loves cute stuff like stuffed animals. He's at an arcade one day, trying to win a cute new stuffed bear, when bullies show up to torment him. In fleeing from them, he happens across a very special toy-catching game---one that has a naked man in it. The man calls himself "Mofu-tarou" (after the name of the stuffed bear) and insists that he is a stuffed animal. He does seem to have genuine stuffed animal ears and a tail, at least. He follows Wataru home, determined to be his new stuffed animal. Wataru's life gets even weirder as his Mumu-tan stuffed bear starts talking, and he has to figure out how to hide his new Mofu-tarou "stuffed animal."