Amano is a bubbly middle school student with the worst luck. She’s always getting into some kind of trouble, whether it's blowing up the chemistry room or having things fall on her! During another unlucky event, Amano falls down the stairs and finds herself the club room of Kaiun Kenkyukai (Better Fortune Research Organization). It turns out that Amano's unnatural amount of bad luck is caused by monsters called Magatsugami. By using the power of the deities that represent luck, the seven girls of the club form "Happy Seven"! Amano's luck completely changes, and she joins the club to help fight off the Magatsugami that hurt others, and to follow her first love!
One clear festive evening, Lucia, a mermaid princess, rescues a young boy from drowning. With him, she leaves the source of her beautiful singing voice: a pink pearl necklace. Several years later, Lucia has grown into a young woman, and embarks on a quest to the human world to reclaim her pearl and find her lost love.
Guided by a star only they can see, a group of maidens known as HiMEs have begun to gather at Fuuka Academy. These young women have been endowed with dangerous supernatural powers that they can use to their heart's content, but there's a price: to wield them, they must put their most important thing on the line. Now, in the midst of school work and friendships, they find themselves caught in the midst of strange conspiracies seemingly related to the terrifying monsters that attack them. Is the power of the HiMEs strong enough to save themselves and the ones they love?
Different genres and atmosphere, but there are similar elements presented. There are definitely some similar characters in Mai-HiMe and Happy Seven. The council president gave the same characteristics (physically and personality-wise). How they executed the story followed the same line; things were all fun and games in the beginning, and at the very end, the story spans out and there's a "last battle". There was also the "red star" deal.
Life can be tough when you're a teenager. Enter Tsukino Usagi, an average, if somewhat clumsy, junior high student whose voracious appetite for sweets and capacity for tears are offset by her enthusiasm for life. Her normal existence is suddenly turned upside down when a talking cat named Luna comes into her life. Suddenly, Usagi finds herself with the ability to transform into the superhero known as Sailor Moon. Fighting the occasional monster may be the least of her worries, though...
Happy Seven and Sailormoon have a lot in common. There's a group of girls that dominate some colour for some reason, and how they fight is basically one single, powerful energy move. The main character, from both series, are bubbly and extremely clumsy; they can come off as being annoying.