From Half-Baked Scanlations:

Ririko, a stylish Charisma Gal from Shibuya, finds herself playing amateur detective after an unexpected turn of events. She is keen to solve cases to prove herself worthy of elite police detective Nii, a man she adores and regards as her fiancé, but her enthusiasm leads her into a whole lot of trouble.

From Viz:
The business of Death is never done. Asato Tsuzuki works as a Shinigami, or "Guardian of Death," in the Ministry of Hades. It's his duty to make sure that the souls of the dead reach the afterlife, but contrary ghosts and humanity's evils keep getting in the way of a job well done. With all these problem assignments, will he ever get a bonus... or will he be stuck paying back damages for all eternity?

Shogi, also known as Japanese chess, is one of the most popular board games in this school and a way for school gangs to challenge and bully others. Yuuki is the boy that gets bullied most of the time and he never won once in fighting. While the bully is running after Yuuki, he got both of them in trouble as he messed up with the violent Shogi Club. Now they are forced to duel in Shogi and the loser will be beatened up. Yuuki's Shogi adventure sets off from here. Will he be able to defeat the bully and take his revenge back?

From CMX:
To seek a quieter and happier life as an ordinary high school girl, Tsubura's just moved from a big city to her grandmother's house in the countryside. On the first day at her new school, she gets through an awkward introduction to her class, when, an errant baseball shatters the window from outside. To everyone's surprise, Tsubura leaps into action, catching it and whipping it into the mitt of the pitcher below. Her rather acrobatic catch-and-throw makes boy students get down on their hands and knees and beg Tsubura to join their school's baseball team. Although the boys have tried to get into the division championships, the team is too weak. For Tsubura, baseball is exactly what she wanted to avoid, so she flat out refuses to join the team. Will Tsubura bow to peer pressure and ultimately take the pitcher's mound?

1-6. Sere♥Kano
Katsuragi's beloved grandpa recently died from a stroke. After his grandpa's death, Katsuragi is contacted by the family at the estate where his grandpa worked as a butler. The family asks him to work there as a butler to replace his grandpa. It turns out, his grandpa was the caretaker of the daughter, who is the same age as Katsuragi, so he will now be in charge of taking care of her. When he is asked to take a bunch of boxes to her room, he walks in on her masturbating. How will she react?

7-8. Swim Girl
9-10. Exploit Me
11. Stick It In Miko

Koharu is solo again, so her friends drag her out to get hammered and talk about their relationships.

Source: Yuri Project

Miyoshi Yoshimune (nickname: Yoshi-Yoshi) just moved to Ikebukuro because of his parents’ work. While exploring his new town with his classmates, Mikado, Anri, and Kida, he hears rumors about “The Headless Rider” and “Color Gangs.” While chasing after these rumors, he gets dragged into a conspiracy involving the whole of Ikebukuro…

Adapted from the PSP game of the same name focusing on a new original character.

Combining some of the early works of Adachi Mitsuru, these books include the two stories Hatsukoi Koshien and Nakimushi Koushien, respectively covering two and four volumes. Both are focused on baseball youth and the desire to reach Koushien, the famous stage of the high-school baseball national championships. Volume seven and the end of Volume six contain a selection of short stories.

Volumes 1-2:
- Hatsukoi Koshien, Parts 1-2, + 10 page omake

Volumes 3-5:
- Nakimushi Koshien, Parts 1-3

Volume 6:
- Nakimushi Koshien, Part 4
- Ace Futari
- Ken

Volume 7:
- Seishun Icchokusen
- Aozora Tsurete Teruteru Bouzu
- Kitakaze Karakara

From Aerandria Scans:

Endou Kana is a cheerful school girl who has a secret crush on... the mayor, Minato Kouichi, a perfect gentleman and well-liked leader of the post-war town. With the help of her friend Akira, she investigates him, until the trail leads her to an abandoned-looking house where a strange and scary foreigner lives. He and Kouichi seem to have some kind of relationship, but what is it? Kana's and Akira's take on that question are completely different and there's still a chance both of them are wrong!

Spin-off of JoJo's Bizarre Adventure Part 3: Stardust Crusaders. Gives an inside look on Oingo and Boingo's way to kill the Crusaders.

Litong wishes to get into a relationship with his neighbour, Yijie, but Yijie treats Litong like a servant! He doesn't know what to do, and is in distress. What'll happen next?

Seito Shokun follows the life of Kitashiro Naoko, nicknamed Nakki, as she plows through life with her friends and family. Faced with hardships and struggle, happiness, sadness, love and tragedy... Nakki paces forth! A manga classic!

Won the 2nd Kodansha Manga Award for Shoujo in 1978.

From Shoujo Manga Maniac:

Lin is an average high school girl who has a huge crush on Daiwen, a popular TV host. Super Pop singer Gonjieh, who is Daiwen's enemy, transferred 6 months ago to Mushroom College. Phoebe and Jia are Lin's best friends and luckily end up in the same class. Unfortunately for them, Lienze, the no.1 delinquent in her school and who scares the living daylights out of Lin, also happens to be in her class. To make things worse, Lin's uncle appears, who she says is the root of all trouble. How will Lin survive?

Oneshot from NisiOisin and Kawada Yuuya:

A boy suddenly wakes up to find out he's in the body of a high School girl. Who is she and how did he switch bodies?

From Paradise Love Scanlations:

Although they're brothers.Their appearance, personality are completely the contrary!!
Suddenly one day, these two completely different brothers switched souls!? After possessing his cute, girly little brother's body, the hard days of the tough big brother begins.

Sae, a young lady of a wealthy family, sometimes can't control herself and gets the urge to behave in a manner unbefitting of her upbringing. It's her butler's job to intervene.

This is the original Niconico Seiga version of "Domino Kick - Naraberareta Domino o Kick Shitara Dou Naru no Kashira?" (I wonder what would happen if I kicked a line of dominoes). As opposed to the Gangan Online version, it doesn't have the subtitle and has a partially different set of chapters.

Collection of stories:

1-2. 16-sai, Shinkon Hajimemashita
Getting married at16th birthday? Swayed by the husband's unreasoning love?
When she was six, Sou-chan promised Wakaba that he would marry her when she turns 16. Ten years later, does Sou-chan still remember the promise he made? Can Wakaba be honest with her own feelings?
What will happen when Sou-chan's father's company goes bankrupt?

3. Akuma no Yuuwaku ni, Amaku Torokeru
Matsutani Mika wants to protect the pastry shop her father left her but lately no customer visits her shop. Can Katsuya help her?

4. Idol-sama wa Watashi ni Muchuu?!
An aspiring idol group 'Infinity three' and its manager are working hard to reach the top position when a scandal happens. Will the team break up?

5. (Sokuhou) Class no Ikemen ga Watashi no Kamikyoku ni Muchuu na Ken
Ichika lhas a passion for making Vocalo songs, but is just too shy to ask people to listen to them. One day she goes to her classroom to find the popular Iori-kun crying to her music?

spin off from the famous manga Negima with negi as the older character and teaching a kindergarden class

Walkure Romanze's story revolves around Takahiro Mizuno, a student studying at an academy with jousting as its main focus for sport. Takahiro acts as an advisor to the riders of the sport. Takahiro goes through each day tediously until the time of the annual competition draws near. Due to some odd circumstances, his childhood friend Mio Kisaki is enrolled into the competition. As she has never even rode a horse once in her life, Takahiro senses the fear in his friend and becomes Mio's coach.

The daily hardships of Hikage Miyakawa, a young girl who lives with her sister Hinata. Due to Hinata´s otaku impulsiveness to constantly buy merchandise, the two girls struggle everyday to have something decent to eat.