The mangaka of Zoids drew the sort of Villainess Otome Isekai story he would like to see.

From Yen Press:

High schooler Ji-Hae is desperately in love with her classmate Seung-Hyu. She has done all she can think of to win his affection, but to no avail. When her latest scheme crosses the line, Seung-Hyu decides he’s had enough…and inadvertently pushes her down a staircase! Ji-Hae awakens in the world beyond, only to learn that it’s not her time to die. But why go back when the love of her life hates her to death? Touched by her passion, the keepers send Ji-Hae to her past life to mend the rift between her former self and Seung-Hyu. But can Ji-Hae keep up the act long enough to find Seung-Hyu and set things right?

When Hotaru moves into a new apartment alone, there’s a mysterious man standing nearby the apartment. Hotaru decides to confront the man, who turns out to live in the neighbouring apartment. The next day at school, Hotaru’s best friend Kanae tells Hotaru that a host tricked her out of her money. When Hotaru goes to confront the host, he happens to be none other than Hotaru’s neighbour, Masamune?!

Note: Most of the plot framework, as well as the protagonist, was changed for the main story compared to the original oneshot. The setting remains the same.

He just finished his University, yet he traveled back to highschool! He was a guy, but suddenly transformed into a girl! But this body... This face... It's pretty nice~ I was always targetted by bullies during highschool, but now, freshman year won't be like it used to. God gave me another chance, and I've decided to stop being good! I shall change history and conquer the highschool! I will become the queen!!!

In a certain kingdom, a prophecy was made about a child born with a birthmark on his back. It was said that he would bring an end to the kingdom, and that his death would bring about its destruction. When the twin prince and princess were born, Len and Rin, Len was discovered to have the birthmark. He was banished to a lonely tower, and Rin was raised as the only princess. However, it ended up being impossible to keep the siblings apart, and soon they formed a deep friendship. Although circumstances may pull them apart, nothing can break the bond they have with each other. They struggle together to survive the treacherous and dangerous world they were born into.

Based on the original "Story of Evil" Vocaloid songs series, "Aku no Musume" ("Daughter of Evil") and "Aku no Meshitsukai" ("Servant of Evil") by Akuno-P (mothy).

His cute kouhai turned into a guy to get closer to him.

1-2) Soaked by the Sun
A beautiful transfer student, Takayama is weak and often absent from the PE lesson, because he has an allergy to sunshine. He is bullied by other students, but a very handsome & cool student, Kasai tries to help him.

3) Mosaic Boy
Hero has changed into a girl when his pulse increases since a bisexual butterfly genes were injected into him by his father, a mad scientist. He is loved by a handsome classmate.

4) Scramble Papa
The heroine's boyfriend is forced to train for the role of Yamato Nadeshiko - true japanese virtuous woman - and goes to see her father to bargain directly

5) Goodbye Hello
A jinx is moved by another boy who prays for his lover's luck with a simple heart.

Showa 5th Year, Yokohama–.

After the Great War, in this country where a dreary shadow was cast by the militaristic tides, Yokohama that was able to spectacularly develop with overflowing exoticism. But One night, the public sprang out from the shocking case of many slaughtered bodies of girl student from prestigious school.

Kouzuki Elena came to Yokohama prior that she had received her her admission into Ieva Girls School.
Elena who had no relatives, not knowing that it was an invitation to deceive prepared by those who wanted the hidden truth behind her "scent" that she doesn't even know.

That "scent"will capture “them”, and make them crazy and lose their mind.

The Secret is Honey. Even if that is a Sweet Poison–.

A hero's wish comes true. He becomes a girl.

The unemployed young person Chiaki are the eldest of three brothers.
With no parents, he started job hunting to support his two younger brothers.
One day, finally attained to the final interview, Chiaki witness the pervert, involuntarily he tries to help, without knowing that this behavior would change his destiny.

A party of 4 heroes defeat the Demon King, however with his last bit of power he separates and gives each of them an unusual curse to make them suffer for the rest of their lives

It's about a guy named Yuuji, who loves to play rugby. One day he just up and dies, in the middle of a rugby match. His spirit is unable to rest, because his team has never gotten a try. So what does he do? Take over someone else's body to accomplish this goal. But... the body turns out to be a girl's!

From Yen Press:

Shinji Souda's not exactly happy about his family's age-old marriage customs, namely the fact that he has to marry a boy! Will a sudden confession from his bride-to-be, a beautiful boy in his class named Aoi, make Shinji change his mind? This sweet love story follows the couple through their marriage ceremony, wedding night, life as newlyweds, and even childbirth! The title story in this compilation is the prequel to Mr. Flower Groom, also being published by Yen Press.

Yuuran, the daughter of a major merchant, was hurriedly married off because of an imperial edict, in order to manage the imperial harem. When her husband, the younger, handsome right prime minister came, she could only apologize to him for having to marry someone as old as her.

But when she went to do her duty at the Imperial Palace, a beautiful woman appeared, and said-- "I do apologize for showing you such an unsightly appearance. I am your husband"!? Entering the harem as a couple with a cross-dressing husband!?

No hobbies, no holidays, no girlfriend, Enomoto lives only to work. Although she enjoys high school life, Rico finds it a little boring. It just so happens that these two swap bodies!? Thrown into their opposite lives, what a crisis! However, talking to women in the baths, and using gal power to fight off exploitative bosses... It's surprisingly cool!?

“Do you wanna make a bet?” Halka, a female magician pretending to be a man, saved a knight who was dying on the battlefield. When Halka, who had chipped away at her own life to use healing magic, awoke, the beautiful knight whom she saved said, “I want you to accept this as proof of winning our bet,” and forced her to enter a master-servant contract with him……!?

Hisui, a crossdresser dancer who works for the Golden Rooster Theatre Group, was orphaned when her parents were killed by a group of bandits ten years ago and her brother Kohaku was abducted. When the group performed in the capital, she met with the Emperor who looks like her missing brother. He suddenly summoned her to the imperial palace. Could the Emperor possibly be her long lost brother?!

Inspired by The Story of Saiunkoku.

Ako was an ordinary school student until she suddenly remembered that she was a demon in her past life...Then she finds that the angel who brought about her death in the previous life has also been reincarnated. And he is none other than her present boyfriend, Yoshi. Ako decides to retaliate against her enemy of her past life, but unfortunately, she cannot evade her attraction towards him! Can she be successful in getting her revenge?

Sagara becomes a girl in his third year of middle school, and has to deal with his crush on Kurosawa, a female classmate.

Includes an extra story featuring Mamiya and Miyoshi from Kanojo ni Naru Hi five years later in volume 1.
S no Kaikoroku is the extra chapter in volume 2.

When a female doctor and martial artist whose family was tragically murdered encounters a sultry but frail scholar, a romantic tale unfolds upon their mutual hunt for the criminals.