Amatarasu Riddle Star

When campus nobody Seiji is attacked by unhinged space demons, it’s his classroom crush Yuuri who shows up to save the day! Her magical-girl powers easily vanquish the enemy, but a surprise ambush forces her to dive in harm’s way to shield him—leaving both fatally wounded. Luckily, Miss Fujiko arrives on the scene with an enchanted thread to bind both their life forces, saving them from certain death.

Over the next three months as Seiji and Yuuri slowly recover, the pair are on doctor’s orders to stay within one meter of each other or risk snapping their “red string of fate.” This means shacking up together and pretending to be a couple to avoid their classmates’ suspicions, but despite the clueless Yuuri claiming to be a “one-woman fortress with zero openings,” her natural powers of seduction quickly result in awkward situations that test poor Seiji’s sanity and self-control...

With his dream girl only centimeters away at every waking moment, will Seiji finally summon the courage to shoot his shot?

— Is there anything more precious than this world?

This world may have already collapsed...
But that allowed us to meet once more.

Follow the story of the imprisoned Rami, the robot maid Mirona...
And Art, our lone survivor.

They have no hope.
They have no responsibilities.

As their feet lead them on a journey...
They happen upon the secret of how this world was destroyed.

Let us hope they find true happiness!

Control your own sperm and engage in a thrilling survival game inside Ayane’s body. Defeat antibodies and collect DNA to strengthen yourself. Are you ready to enter Ayane’s world and embark on a journey into the evolution of life that no biology textbook can teach you?

Average joe Seiji encounters another magical-girl wonderkid—this time in the form of the mysterious Maja Krienke at his neighborhood park! Intrigued by her aloof charm and possible hidden motive, he tries to say something, when a Majin appears out of nowhere to reveal Maja’s true identity—a ruthless warrioress in cahoots with evil in exchange for the darker arts...

Stunned, Seiji agrees to serve as Maja’s familiar—or “satellite”—to aid them in taking down another, rival Majin’s demon hordes. He also stands to gain an impressive array of powers, but as a trade-off, he is now tightly bound to Maja by a magical tether, connecting him to her around the clock! As fate would have it, this rope is essential for Seiji to receive a steady supply of magical force—or risk his new satellite body collapsing in the mortal realm.

Forced into cohabitation with the lovely Maja effective immediately, he soon learns of her “unique” blindspots—for better or worse, her guard stays perpetually down around our loyal but increasingly frustrated hero, resulting in plenty of questionable close calls and near-accidents... Will an unlikely summer shack-up stir up something else between them, or will Seiji forever remain her indentured servant?

Japan has entered a new era, but Seiji’s life still remained the same. The only recent change has been Maja’s transfer to his class last winter.

However, one night he was attacked and had his life force drained by his underclassman Kanoko. She was actually a magic girl who protects people from monsters, but then why did she attack him? Did it have something to do with her family being attacked by monsters in the past?

It was decided by the magic girl society that Kanoko will stay together with him while they determine the cause of the unnatural changes to her body. Normally she is quite calm and collected, but living with her opened his eyes to another side of her. What will become of their time together full of unexpected intimate incidents?