Sakura had lived with her grandma ever since her parents died in a car accident when she was three. When she turned fourteen, her grandma also passed away, leaving her alone. Just when she was about to give up hope having a family, out of nowhere, four guys claim to be her older half-brothers.

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- Himitsu no Tobira no Kugurikata (Vol. 4)

Chika Terashima is a 10th grader that wants a prince like in shoujo manga. One day, Chika and her twin brother Shohei switched bodies. Since they both go to a school with only 1 gender, they both have chance to find their true love.