She was a tomboy... big emphasis on "WAS".

1-page illustrations created and posted by @macharge on twitter

Artist’s Pixiv: https://www.pixiv.net/member.php?id=614227
Artist’s Twitter: https://twitter.com/macharge

"Sex" made more familiar!

Health and physical education teacher Tsuji, who has doubts about modern sex education, attempts boldly to teach sex education to an audience of, among others, a girl who has a girlfriend, a girl who like BL, and a girl who simply likes cats.
"What is safe sex between girls?" "Positive masturbation?" "Why do sugar gliders (Petaurus breviceps) have vaginas?"
Beyond dirty jokes, but less than gravely serious, a sex education comedy!
Bright sex education begins with a heretical female teacher and female high schoolers!

Keitaro opened his front door one morning and suddenly transferred to a different world where demons and monsters live. Keitaro meets a young girl, Nia who is a half-demon. Nia urges Keitaro to "make a child" with her. Apparently, a half-demon woman can only have children with a human male...

Wi Suk-Hee works at a law firm along with her crush, attorney Kang Mino. However, a new employee Jung Yoon-hoo joins the firm and a love triangle relationship forms..

Aoyama Sousuke, a college student who suffers painfully from his parent’s traffic accident. He chanced on Shinoda Kozan - a Sumi-e artist at an exhibition. Then, Kozan was interested and surprisingly accepted him as his disciple. However, Kozan’s niece strongly disagrees and decidedly makes a bet for the “Kozan Award”. She wants to defeat Sousuke at any cost. Although he seemed uninterested in Sumi-e painting at first, he finally turned out to be attracted to it. He then gradually recovers his feeling by each stroke he draws...

Published in Bi-weekly Magazine, Evening for “Ore no Reiwa Project”

“That makes a grand total of 100 thousand dollars.”

After Tsukasa’s mom is killed in a car accident, her dad becomes addicted to drinking and gambling. One day, he disappears, leaving Tsukasa with a debt of 30 thousand dollars. There’s no way a student like Tsukasa could get her hands on that much money! Eventually, debt collector Reiko shows up, inviting herself into Tsukasa’s home and telling her to pay up. She offers the young girl a way of getting cash fast: by selling herself to Reiko. “Want to sell me your body?” Tsukasa agrees without really understanding what that entails, and when Reiko moves in with her, their relationship suddenly takes an unexpected turn…

Shibaki is a high-school boy whose only interest is girls. It's just that he's been branded as the greatest pervert at school and the girls avoid him like the plague.
One day he happens to find a book in the library about how to summon witches. He tries it as a joke, but it turns out to be the real thing. An apprentice witch named Rurumo grants his foolish wish for a high price. Shibaki ends up helping Rurumo and in return she refuses to take his soul. Doing so, Rurumo loses her position and puts her own life on the line.
Rurumo must complete the task of getting Shibaki to use 666 magic wishing tickets before she can become a witch again. However, every time ticket is used, Shibaki's life shortens.

Now, Shibaki has his own life on his hands. Make a lot of wishes and help Rurumo become a witch again or resist the temptation and try to live long life.

Haruka is in love with his best-friend Ryou who marries his sister. The day of the marriage he drinks too much and ends up staying in one of the room of the hotel where the receivement is done. In the night he is attacked and raped by someone who claims to hate him and that he'll never forgive him. Few days later at work he meets a new colleague and soon recognize in him his attacker. What is he doing here? What does he wants from him? Very good Manga, despite the general seriuos plot, can be even funny sometimes.

The past life died because of the imperial concubine, and he was born again in the high school era. It coincides with the recovery of the aura and the great changes in the world. When rejuvenating a teenager, he will follow the path of his journey, and he will protect his own friends. Loved ones. When he does not choose to stay, he will push him all the way.

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?