First-year highschool student Momota Kaoru just saved a beautiful highschool girl, Orihara Hime, from a train molester. One thing leads to another, and they end up going on a date! They have a lot in common: they both love video games, they both jam to their favorite songs on mixtapes, they were even both born in the Year of the Snake.
Except... Orihara's first game console used cartridges... and her old mixtapes are all on MiniDisc... and, oh, her birthday is actually 12 years before Momota's!
When her secret comes out, she thinks it must all be over... but will Momota really let something like a little age gap get in the way of his love for Orihara? Find out if love really can transcend generations in this sugar-sweet romantic comedy!

(Source: J-Novel Club)

From MangaHelpers:

Half a year ago, the four members of a literature club, as well as the elementary school niece of their faculty adviser, were bestowed with supernatural powers. The boy in the club, Ando Jurai, became able to produce black flames. The girls acquired a variety of powerful abilities: Tomoyo could slow, speed, or stop time, Hatoko could control the five elements (earth, water, fire, wind, light), little Chifuyu could create things, and Sayumi could repair objects or heal living things. However, since they gained these powers, nothing has really changed in their everyday life. Why have they been given these powers in the first place? Will the heroic fantasy life they imagined these powers would bring ever actually arrive? [tethysdust]

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The five members of the literature club awakened with extraordinary powers half a year ago. Although the members expected to be thrown into a world of super-powered battles at their school, their normal daily routine continued. No secret organizations bent on world destruction, no super-powered wars, no brave heroes or demon kings. However, the members still look forward to the possibilities of adventure, and continued to believe that with each day, they were getting ever closer to those days of fantasy. Their days of romantic comedy and battles with extraordinary powers begin!
(Source: ANN)

After defeating the Demon King and saving the world, Shion was exiled to the border. Here, the strongest Hero enjoyed his slow life with 4 capable oneesan maids.

(Source: MU)