From Fantasyshrine:

Five years ago in summer, Takuro's older brother, Kotaro, a high-school teacher, brought his student, Hiro, to Takuro's apartment. The three of them started living together happily.
Until one night, Takuro discovered that Kotaro and Hiro were actually lovers. Although he felt hurt, angry, and betrayed; Takuro realized he had also fallen in love with Hiro.
However, tragedy struck when Hiro's older brother, Reiichiro, finaly located Hiro...

Izumi Maya, a 33-year-old professional pastry chef, who went out to buy some mustard, gets caught in an accident. When she regains consciousness, she has been reincarnated as a 12-year-old princess! On top of that, she also has a husband who is older than herself! And a king, no less!
Maya realizes that she's in a position where her life might be targeted, thus, decides to try to get along with her husband to protect herself!
In the name of a pastry chef, I’ll defeat the criminal and my husband’s stomach at the same time!!

A humorous chronicle of the daily meeting-room problems of Yukio Tonegawa, who works as a middle manager for the whims of the evil, unreasonable business magnate Kazutaka Hyoudou.

In the summer her grandfather passed away, high school girl Kiyoi found herself abandoned. To protect her home, she decides to marry that man…!!

[from cotton candy scans]

A spin-off from the mega-hit “Totsuzen desu ga…”! You’ll meet Nana Ryuu, Asuka, and Kamiya again! Rika was dumped just before getting married. She thought her plan for the rest of her life was ruined… until she reunited with her ex-boyfriend from 6 years ago, Kamiya…? This volume also contains an extra story of Nana Ryuu and Asuka at the end of Kamiya’s spin-off!

Chapters:
Totsuzen desu ga, Kyou Ai ni Kite (First Half)
Totsuzen desu ga, Kyou Ai ni Kite (Second Half)
Lapis Lazuli Dawn (Oneshot)
Under the Covers (Oneshot)
Totsuzen desu ga, Ashita Kekkon Shimasu - Extra

Yuzu Okashi is a shut-in author living alone in neglected squalor. When the neighbor girl Makoto forgot her apartment key, Yuzu took her in until her mom got home. When Makoto saw the mess in Yuzu's apartment, she promised to take care of Yuzu like a mother should! (Anilist)

Set during the Keiou era of Japan. In the restlessness before the storm of revolution, the heir of a wealthy samurai family meets a beautiful young man.

A group of scattered people who were friends in high school start getting killed one by one, and danger soon follows the heroine, Aihara Kumi, as she starts suspecting that one of them could be the murderer.

V. Koibito no Namae

1. Lover's Name
One night, Ei Ariga the private detective was hit on by an obnoxious stranger whilst out working on a case handled by his father's agency. Then the timid and very polite Ryouichirou, who is a dead-ringer for the playboy stranger, turns up at the agency and tries to engage their services to find out why and how someone is breaking and entering his apartment. Ei-kun discovers that the nasty, violent and annoying carbon copy is called Naruaki and things get extremely complicated when he starts falling in love with both Ryouichirou and Naruaki... Lover's Name is also found in Double Lover - Koibito no Namae

2. Saikou no Kimi
The oneshot is also found in Saikou no Kimi.

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V. Double Lover - Koibito no Namae

2. Kimochi no Yukue
It's been three years since Kirima walked away from his relationship with Kou. Kou's obsessive love was what sent Kirima running in the first place, and now that he has Kirima back he's not about to let him escape again...

From MangaHelpers:
In the near future, aliens from Bluto “invade” the Earth. But what is their objective? To steal all of the timed sale groceries at rush hour and make perverted havoc among the citizens. Not the kind of aliens you would find every day. To counteract this “terrifying” enemy, a special force of heroes, “The First Star Heroes,” has been sent out wearing dynamic colors. But, out of the five heroes, two of them have a secret. Momose Kaname, a 14 year old boy who has idolized these heroes, is transformed into the team’s Pink Hero and now has to hide his identity. And “he” finds out that the Red Hero of the team is actually a girl who has experienced the same gender-bending transformation as Kaname. What will happen to these Heroes, especially Kaname, as they face all kinds of odds during their “heroic” days?

Tachimori Ashita inherited the Tachimori Mansion when his parents died in an accident. Originally owned by his great grandfather, the estate has been traditionally an inn that had many people living in it but, as of lately, it has become vacant due to Ashita losing his parents. As Ashita tries to revive the mansion in remembrance of his parents, he is surprised by a young girl looking vampire named Noi and her servant Sesera who claims to own the place.

According to Noi, she lent the mansion to Ashita’s great grandfather in return for maintaining the building until Noi returns. As a vampire, Noi has super strength, the ability to turn into mist and can cast various spells. She has a powerful dark aura that attracts evil spirits and, because of that, Noi has had to constantly be on the move. But because of that, she has been abandoned by her family and friends. Ashita decides to let Noi and Sesera stay and is determined to start a new chapter in the Tachimori Mansion history.

Dear Sa-chan, if only I’d had sex with you that time, perhaps I wouldn’t have wandered down this disastrous path. A story of true love and it’s downfall, brought to life by an unconventional protege.

1-3) Furachi na Kare no Shitsukekata
Sayuki Isumi, salaryman, got drunk one night because of some trouble at work and bumped into Aya Okimiya, who is one year his junior from university. Okimiya who admired his sempai for quite some time from afar could not help himself anymore and ended up embracing him but can he keep Isumi by his side?

4) Milk Taste Honey
Kaidou-san is a salary man who comes every day to the cafe where Hanabashi Ritsu works. He admires the part-timer from across the room, whose cool exterior entices Kaidou-san. But truly, there is a cute, blushing Ritsu behind the cool beauty on the outside...

5) Welcome to the University of Love
Aizome Riku enjoys napping on the school's roof, but when he falls from a tree tryng to climb down Kairi is there to catch him. The two become fast friends, but Kairi's three bodyguards who follow him everywhere soon grate on Riku's nerves. Can Kairi convince Riku that his 'like' is more than friends and capture his would-be uke's heart?

6) Furachi na Kare no Shitsukekata Extra

Creamy Mami is about a young girl, Yuu, who after seeing a spaceship is given the power to use magic for one year. She is also given 2 cats, Poji and Nega, to watch over and guide her. Using her magic powers to transform into the idol Creamy Mami, Yuu must work hard at acting, singing, helping her parents at their crepe shop, fighting aliens and bad guys, going to school, plus try to get the affections of her childhood friend Toshio.

During the Interwar Period (1925-1932), Tomoji lives in the Japanese countryside while Fumiaki works as a photographer in Tokyo. One day, they meet... This story is inspired by real characters who founded later a branch of Buddhism.

Rather than having zero defence, she pretty much has -10,000!? This self-destructing lewd girl is frighteningly cute! The girl who digs her own graves & the sadistic boy who gets carried away too easily; this is a story about them messing around and their cohabitation in this love comedy!!

Saito Yo has just been assigned to be the secretary of the company's new director, Nabeshima Hisatsugu, who has supposedly "never worked a day in a company" before. Saito is taken aback by the new director's seemingly non-professional demeanor, and he works hard to reform Nabeshima and get him accustomed to the role of director.

A comment Nabeshima makes one day, however, devastates Saito: Nabeshima mentions that Saito wasn't what he thought a secretary should be. Shocked and frustrated, Saito carelessly blurts out while drunk one night that Nabeshima should "take advantage" of his services. From then on, Nabeshima changes his attitude and leaves Saito feeling even more bewildered.

Rin had quit calligraphy after her mother's death. Then upon seeing the calligraphy of a high school calligraphy masters, Uchida Dougen, she started learning again. Rin entered the same school as Dougen and the current calligraphy club or more like Dougen fan club. When the student council president announced that the club would be disbanded, Rin had to take action to keep the club going. Dougen, who had come to support the president, ended up joining the club because Rin's word sparked his interest. Unbeknownst to her, Dougen is somewhat of a playboy. What will become of Rin and her beloved Calligraphy club?

He met a girl. A young girl branded with the mark of a criminal. That was the beginning of everything. "Crap, my girl's so cute" This is the story of the two who became an overly protective guardian and an adopted child, changing relationships, and furthermore until how that relationship evolves.

Girl moves into an "apartment" (seems more like a house with a bedroom being rented out) and finds out the landlady is a lesbian. Being the bubbly cheerful girl she is, it doesn't really bother her, but what will happen when the landlady develops feelings for her and starts coming on to her?