Includes 3 stories:
1. Five Part side story by Mitsuteru Yokoyama that ran from November 1967 to March 1968 in Shogakukan Comics.
2. “New Giant Robo” manga made in July 1968 by one of Yokoyama's assistants for Second Grade Elementary Magazine.
3. “Fun Kindergarten” is one shot made in July 1972.

She worked herself to death in her past life, but then she was reborn in another world as the villainess Ronia! As expected, her engagement is broken and she's expelled from society, but now she takes that chance to live peacefully, and even opens a cafe with the help of her fairy comrades, which is becoming unexpectedly popular with beast-kin...?

From a lineage of elite demon lords, the current demon lord Eugene Satania - Vidorick has one secret way of relaxing from the stress he accumulates in the demon world. Which is to go to the human world under the guise as the human named Sayano Yuuji, mixing into common everyday folk to enjoy himself! Now a rookie-low-class demon suddenly appeared in front of him, named Mist. With a good-for-nothing low-class demon at his side, Yuuji now has to hide his identity at all costs! Let's start this suspicious rom-com!

A muscular youth who grew up in a rural environment has finally found his springtime high school life, and it turns out his romantic partner is the most popular girl of first year?! But, the truth isn't as straightforward as the muscular youth believes it as...

Due to a false charge, Felicia Suwarose got her engagement with His Highness annulled and was expelled from school. There’s nothing but misunderstandings all around her, but the person herself only wants a rose-coloured commoner’s life. It’s a story about characters from “Nation’s Saviour Lady Rose”, an otome game from her previous life.

Ako has a somewhat distant relationship with her family, and one day she gets a call from her father about a bit of a crisis.

Nakajima Mamoru, by coincidence, reunited with Mikuriya Jin, his senpai from his University days. He was invited by Mikuriya to work for his established shop “Nandemo Ya”. Nakajima, feeling as if he was on cloud nine, didn‘t know that Mikuriya was hiding an unbelievable secret!! Taking hold of this opportunity, Nakajima found himself involved in a rather complicated situation!! A work of Takemaru Abiko, one of Japan's leading mystery writers. A thrilling, dramatic mystery!!

A Company President diagnosed with cancer accidentally transmigrated into a novel, and became the villainous emperor the male lead is going to kill?! On top of that, this male lead is the prince of the enemy kingdom that is being imprisoned by him at this moment…. Feels like he just took a step closer to death! No way! In order to live, I must please him, but I never knew that it wasn’t just simply hatred between us….

A life of a college student named Chihana along with his two animal companions: an aloof and dazzling cat called Neko-san and an energetic and friendly dog called Inu-kun.

Unlike other manga series, Yu-Gi-Oh! OCG Structures revolves around game play to show readers how to play the card game, as well as giving tips on crafting decks.

Leslie’s life was always used for the betterment of her sister, Eli. After a failed attempt to extract the black magic within Leslie to transfer to Eli, Leslie knocks on the door of the monster Duchess and pleads for the Duchess to adopt her?!

Hime and Hiro are a normal couple in high school... except that Hime has a tendency to bite Hiro.

After losing to the demon king, her soul got swapped with a weak girl. Tired of her former life, she decided to live the rest of her life as a normal girl instead! Will our heroine able to live a normal life? Or is there something more to this new life she received?

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After he was defeated, the Demon King used the last of his strength to trap the captain of the Holy Knights into the body of a weak girl. However, the Captain was a girl to begin with, so, tired of her former life and unable to return to her former body, she decides to live a luxurious life instead in the body of the noble daughter she's trapped in. However, her new family puts her in danger, so she tries to go to the church to prove her identity. In order to do so, she ultimately becomes engaged to the captain of the special task force. Will she be able to prove her identity and still live an ordinary life? What will happen to her relationship with her fiancé? And, is there something more to this new life she's received?

A fun life with a mysterious cat who is able to talk to both humans and cats! I'm actually able to understand the feelings of the cat! A life comedy with a cat!

The Hero’s party was attacked by a large group of powerful devils. The party will no doubt be annihilated if this were to go on.
One member of the party, the strongest mage, Rakku decided to stop the enemies in their tracks.

A boy who used to be abusive to girls wakes up one day as one.

“I'll go back being a boy soon,” he thought, however that was not the case. Follow Akira as he grows and learns little by little to accept the puzzling changings in her surroundings and her heart.

Taiyo Asano is a super shy high school student and the only person he can talk to is his childhood friend, Mutsumi Yozakura. It turns out that Mutsumi is the daughter of the ultimate spy family! Even worse, Mutsumi is being harassed by her overprotective, nightmare of a brother, Kyoichiro. What drastic steps will Taiyo have to take to save Mutsumi?! A spy family comedy — the mission begins!

A boy who used to be abusive to girls wakes up one day as one.

“I'll go back being a boy soon,” he thought, however that was not the case. Follow Akira as he grows and learns little by little to accept the puzzling changing in her surroundings and her heart.

I've failed in this life. This is the start of my new 13 lives, together with Death.

Multiple years ago a man in a turtleneck appeared from a different world with his cheat abilities and high intellect he cooperated with the dwarves to make the device that changed the world the “Smartphone”, years later, the world was taken by the magic of social media, and encouraged by his companions, the holy knight “folg” has decided to make an account, but with the internet filled with trolls, how will it go with the noob holy knight.