After socially awkward technology specialist Manabu "Gaku" Taira is saved from thugs by the outgoing Haru Tennouji, the two men find that they get along with each other well. Years later, Gaku, who is having a tough time getting a job due to his timidness, is convinced by Haru to apply for a position alongside him at Dragon Bank, one of Japan's largest IT companies. During their interviews, the company's board director, Kirika Kokuryuu, takes an interest in Haru and Gaku's contrasting personalities. However, Gaku does not get hired by the company, leading Haru to quit the job on his first day in protest. Nevertheless, they decide to embark on an ambitious plan of making a trillion dollars. In order for their scheme to come to fruition, Haru and Gaku start looking for potential investors, but everyone rejects their extravagant idea. In spite of that, the two soon find themselves getting an offer from Kirika—and with her investment, they might just be able to reach their goal.

Aspiring manga artist Mizuho Nishino has grown alongside her four childhood friends: Kizuki Hazawa, Shuugo Hoshikawa, Shin Kashiwagi, and Airu Izumi. But on Mizuho's 17th birthday, Kizuki suddenly asks to be her boyfriend. Having no previous experience with romance, Mizuho brushes it off easily, but Kizuki is genuine and intends to win her heart. Kizuki no longer hides his affections, and Mizuho hesitates, worried about the consequences their potential relationship could have on their whole friend group. As Mizuho works through the confusion of youth, it seems that the other three boys have fallen for her as well—and she must find a way to sort her feelings out without shattering the close-knit group she holds dear.

"Remember, when you had wings." In response to a wish from 12,000 years ago, a broken heart connects. When the sun, moon, and Mars meet, a new melody of fusion flows! Enoshima is a small island floating in the Shonan Sea. On its beautiful and tranquil beach, there is the "Private Enoshima Academy." The school gathers talented children from all over the country, and provides them with a gifted education using the latest equipment. Sakko, Rimiya, and Toshi, who have been selected as students in the special reinforcement class "Elements," are ordered to pilot the "Vector Machine," a fighter plane powered by the power of emotion, and are forced to fight against the mysterious invasion weapon "Mythical Beasts." In the middle of the battle, guided by a mysterious vision, Sakko shouts out... "Planetary Fusion! Go, Aquarion!" At the end of repeated reincarnation, the mechanical heavenly wing Aquarion appears. The boys and girls, burdened with their destinies, will come face to face with the truth of the universe as the mysterious organization Space Egg Society and the intentions of adults intersect... This is a grand myth of love spun with one's own feelings and the survival of the universe at stake.

Although Kenzaburou Tondabayashi is a 52-year-old bureaucrat, he is well versed in reincarnation stories where a protagonist suddenly awakens in a fantasy world. After being hit by a truck, Kenzaburou lands in that exact situation. However, what baffles him is the fact he wound up in the world of an otome game—as the young villainess and the daughter of a duke, Grace Auvergne. Fortunately for Kenzaburou, he is somewhat familiar with his new world, as it is based on the game called Magical Academy: Love & Beast. He was a proud father in his previous life, and he often listened to his daughter rave about the game's setting and characters. Armed with background knowledge and a lifetime's worth of dad skills, Kenzaburou strives to make the most of his new life, though his kind-hearted nature makes it difficult to fully embrace the role of a villainess.