Jun'ichi Kanemaru

Sonic the Hedgehog's typical irreverence leads to the coveted chaos emeralds being caught in the crossfire and rendered unstable just before activation. The resulting chaos control engulfs everything for miles around Dr. Eggman's base, and, with scrambled input, nobody can predict the outcome. Isolated from his friends and enemies alike, Sonic awakes in a strange world: an unknown city surrounded by mysterious people. He realizes he has been warped across the universe to an entirely different planet—Earth. As he rushes to escape the equally confused authorities, Sonic finds himself falling head-first into the pool of the illustrious Thorndyke family. Thankfully, Christopher, Thonrdykes' son, saves Sonic and offers protection from a society that mistakenly believes him to be hostile. Sheltered by the family, Sonic resolves to regroup with his friends, save this new world from the threat he brought to them, and find a way home. [Written by MAL Rewrite]

When Miki Koishikawa welcomes her parents home from their trip to Hawaii, the last thing she expects is for them to gleefully announce that they are getting a divorce. To her shock, they plan to switch partners with another couple they met on vacation. Barely able to keep her emotions in check, Miki begrudgingly attends dinner to meet the other couple and their strikingly handsome son, Yuu Matsuura. After moving into a spacious house with her newly blended family, Miki struggles to adjust to her new lifestyle and her blooming feelings for Yuu. She attempts to navigate the coming school year with the help of her best friend, Meiko Akizuki, who is hiding a scandalous relationship of her own. However, the road ahead is not simple, as both Miki and Yuu have other potential suitors and emotional baggage from their pasts they are reluctant to reveal. [Written by MAL Rewrite]

As a young man returns home after his first year away at college he recalls his senior year of high school and the iron-willed, big city girl that turned his world upside down.