On an artificial island, Akane Isshiki, an innocent 14-year-old girl, lives a simple but happy life with her level-headed little sister Momo and their genius inventor grandfather. On clear days just over the water, everyone on the island can see the revolutionary invention that solved all the world's energy problems, the Manifestation Engine. Thanks to the Manifestation Engine, the peaceful days that everyone had dreamed of had arrived. But suddenly, a mysterious enemy called the "Alone" appear out of nowhere aiming to attack the Manifestation Engine, jeopardizing their quiet way of life. Equipped with incredibly powerful Palette Suits designed by her grandfather, Akane and her friends must rise up together in this desperate situation. Their friendship is the only hope to save the world.

Is insanity hereditary? Shougo Mikadono's beginning to think so, because the terms of his late father's will seem crazy and following them may drive Shougo bonkers as well. Oh, it sounds simple at first: before Shougo can claim his VERY large inheritance, he just has to start attending a certain new school and find a nice girl to marry. It's a little unromantic, but perfectly do-able, right? After all, all the girls seem quite friendly, so all Shougo has to do is find one he has something in common with. Except, and here's the kicker, it turns out that Shougo has WAY too much in common with one of them, because she's actually his long-lost sister! And he has no idea which one she is! Will Shougo meet and court his Miss Right without committing something very morally wrong? Can he find his future bride without slipping into the wrong set of genes? And if his little sister does reveal herself, just how much will be revealed and under what circumstances?

Sakurai Tomoki goes on a trip to a hot spring, and is soon up to his usual perverted antics. In addition, he's about to receive his first love confession! However, his desire to pass his days peacefully is challenged once again by another Angeloid. Compared with the hostile Angeloids he had encountered in the past, this new Type Zeta Angeloid is by far the most powerful!

The story revolves around a highschool boy named Niwa Makoto. He lives with his aunt's family since his parents are away on business. It is there where he meets his mysterious cousin of the same age Touwa Erio — who happens to tie a futon mattress around her upper body and is a self-proclaimed alien. Her staple food is pizza. Erio had been missing for half a year and was found floating in the sea. She doesn't remember anything about what happened during that period of time, but she began to think that it was the act of an alien and wanders the neighbourhood wrapped in the futon.

The slapstick romantic comedy centers around an ordinary 16-year-old high school boy named Yūto Amakawa who is protected by a spirit—specifically, a beautiful, sword-wielding cat girl spirit named Himari. Yūto is descended from a family that has subjugated demons since time immemorial. The charm that once protected him is now impotent, but fortunately, at that same moment, Himari appears before him as his new guardian.

Girl-crazy Tomoki’s quiet life gets turned upside down when beautiful, winged Ikaros falls from the sky – and starts calling him master! She seems a little bit lost on Earth, and her origins are shrouded in mystery. One thing’s for sure, though – she just might have the power to make Tomoki’s every dream come true! The heavenly hijinks continue in Heaven’s Lost Property: Forte! Tomoki may long for peace and quiet, but with Ikaros and Nymph still adjusting to life on Earth, things aren’t likely to calm down anytime soon. Plus, there’s a new Angeloid on the scene – and she’s been sent to eliminate Tomoki!

Kobayashi Manabu's new life as a freshman at the prestigious Kirameki High School begins. As he explores the new school with a video camera, pretending to collect data as a member of the student council, he conducts several interviews with the female heroines of the story.