From Digital-Wing.com:

In the December 1998 issue of manga magazine Young You, Naoko returned from her yearlong break from work with a new series: Princess Takeuchi Naoko's Return-to-Society Punch!!. This "private essay comic" is a silly narrative in manga form about the events in her life." After her post-fame with Sailormoon...this is Naoko's return.

Two brothers wearing bunnysuits hop on a phallic train and travel to a mysterious underwater brothel.

Taken from Deja-vu: Long ago, in a world of shadows, the sky was split by a bolt of lightning; according to legend, from this bolt was born a warrior who was the reincarnation of the Dragon God...

From etc:

Ryo thinks she is a normal girl living a normal high school life in modern day Tokyo. But is she? On a school trip, a mysterious man attacks her and claims that he is Benkei, the legendary warrior monk who collected 999 of his opponents' swords in battle during the Heinan era. And he also claims that she is Ushiwakamura, the 1000th opponent, that according to folklore, beat Benkei and became his master. But...Ushiwakamura was a man! And Benkei and Ushiwakamura existed in 13th century feudal Japan!

From Nakama:

Akihiko is the young master of an unprofitable Kimono shop. He has a sexual relationship with his friend Inoue, the son of a president of a bank, in order to get loans to keep the shop afloat. One day though, his servant, Awata, who has harbored a secret crush on Akihiko, stumbles upon their love affair. After confronting Akihiko to stop selling his body to Inoue for money, Akihiko tells Awata to buy him instead. Awata flees the shop and the house in shame. Several years go by and Awata comes back with untold amounts of money that he has earned in the shadowy underworld of crime in order to buy Akihiko. Akihiko is forced to accept Awata with pleasure and indiginity warring within him.

From Fantasyshrine:

In the year of 20XX, United Nation Allied Army tries to overpower the Yamato Empire from the Fareast. Colonel Irving of the Allied Army captures a beautiful Yamato lieutenant named Yamamoto. The prisoner’s interrogation quickly turns into a grueling torture, while his captor ends up succumbing to his lust for his mysterious prisoner…

From September Scanlations:

1-3, 6-21) Rutta to Kodama
Ruizaki Takao has a new roommate: transfer student Miyagi Kodama. Ruizaki's a rough guy who gets into fights all the time, but he's gentler around Kodama (who gives him the nickname 'Rutta'), and the two eventually become close friends—until one day, out of the blue, Rutta confesses that he's in love with Kodama…and thus begins their relationship. A beautiful, humorous school-life BL manga detailing the pair's blossoming relationship, with its ups and downs and everything in between.

4-5) Torao and Tatsumi
The 'Western Tiger' Torao and the 'Western Dragon' Tatsumi are not only two of the strongest guys in the city they're also childhood friends.

Collection of short stories including:

1) When businessman Masaya runs into his lover from high school, Kobayashi, he's very happy. But Kobayashi's not interested in picking up where they left off.

2) Two Lapis Lazuli Colored Hearts
End of the first story.

3) Two Hands Touch My Lips
When an important project comes up at work Kitagawa must work together with Okano, even knowing that the newcomer may take his job. But Okano is after another sort of prize...

4) Exclusive: The Elite Sexlife Next Door
Four page short of Okano and Kitagawa.

5) Unrealized Love
After confessing to his boss Kanzaki, Matsuda can't face him.

6) Teach Me About Love (Koi wo Oshiete)
Suave ladies man Kanzaki is rich and charming, so he's never had any problems with love. But reserved secretary Matsuda is a different story.

7) Unbridled Happiness
Student council vice president and total brat Torao Sakuramine can't stand cool transfer student Hazuki Akahori, especially the way Akahori is totally indifferent to him.

8) Secret Love
Growing up with a single mother has given Yutaka a close bond with her, to the point of being teased. But the high school student has more to worry about with his older cousin Takahiro who always makes fun of him moving in with them!

Rulia-nya!! is a 4-koma series about a foreign exchange student Rulia and her everyday life with her classmates.

Rio is a student at a magical academy, together with his friends Jean and Rain. One day a mysterious magical barrier appears around his teacher's room, locking everyone out and Rio is determined to find out what's happening behind the barrier.

Welcome to Rubbers 7, a small Japanese convenience store with a reputation for some odd owners. Rumors of mob connections and one rather eccentric boss with a passion for Ping-pong tend to keep business low. But when a young, quiet girl is framed for shoplifting and ends up working for the store. Can her touch, with the help of her unusual coworkers, including a shy boy and a drag queen, turn the fortune of the store around?

Taiki agrees to see his college friends Ruma and Hoshioka to celebrate their wedding. But during dinner, Hoshioka is shot and Ruma loses his memory. Why was she killed? And will Ruma ever remember what happened?

Three friends re-unite after not seeing each other after college. The occasion is the wedding between the two. However, on this fateful day, the newly-wed woman was shot, and consequently died. The newly-wed man, because of the shock, loses his memories of the woman and his marriage to her, among other things. However, he remembers his best friend (the other guy with them), and that best friend helps him to put his life together again and discover the truth behind the death of his wife.

A spin-off of the Rozen Maiden series.

A classical favourite manga based on the book by Jin Yong. The story about Wai Siu Bo the boy who was brought up in the red light district and became the best friend of the emperor through lots of luck and a smart mouth

From Shinmakoku Scanlations: Honami Kairi's fate changes when he accepted an offer from an old man to work for a rich family as a housekeeper. The low-level job suddenly transforms into a wedding workout with his schoolmate, the foreign Royal Prince Shou...! It's a fairytale with a twist...

From Attractive Fascinante:

Sakuya, a high-schooler, went to a place called Romantic Villa Hakuou to look for Shinonome to fulfill his grandfather’s final wish. This is a place where only those with power and money can come to buy a man’s night. Shinonome is the most beautiful and the number one oiran there. Sakuya had wanted to leave once he settled the issue. However, he was forced to stay because of Shinonome’s stubbornness. And that night, he witnessed the number two oiran, Asagi, serving his benefactor. What will he do from then on?

A mountain spirit is strangely attracted to the club members of the Roman club in the high school near her shrine … and thus begins all their adventures into the unknown.

From Aerandria Scans:

Tezuka Ayane was aiming to become a pianist. She was also working as a part-time home-tutor when she met Narumiya Kou. She found herself falling for him, but there was a difference in their ages and her feelings didn’t seem to be returned. Six years have passed since then and Ayane is a music teacher in an all-girls school. One day, she goes to a jazz-piano audition and meets Kou there..!

From Tokyopop:

Appearances can be deceiving. There is trouble in Tokyo as a mysterious terrorist organization called ALICE plots against the government. Just as the police are tasked to bring these men to justice, they are given a "secret weapon": a young girl with a mysterious past named Kasumi Asakura. She may look innocent, but she walks softly and carries a big gun.

Former Rosa Gigantea and Shiori-san comes back. But they have come to steal Shimako away from Sei and Noriko.