
The story concentrates on the Furou siblings – brother Daisuke and sister Kyouko. They refuse to leave each other’s side. Since kindergarden till high school they were always together. Before, as children, they were considered cute. Now they are plain weird in the eyes of their classmates as well as parents.

What is one of the worst things that can happen to bride on her wedding day? Saying to bride to carry on with ceremony alone so that her “dear” unfaithful husband can be as irresponsible as ever. (they have already signed the marriage certification). What prevented her from divorcing him that very same day was her brother-in-law Soujirou acting as stand-in vowing:
I vow a thousand, a million times…. never to let you leave my side.

“A lone gatekeeper stands watch outside of the Lost Castle. All who enter the castle he never sees again but he cannot warn them for he is cursed. Then one day a beautiful girl wants to enter! What will the gatekeeper do? What is the secret of the castle?”

“Even in a world full of noise, if you listen carefully, you´ll be able to hear your favorite music.”
(page 49, translated by Crimson Flower)
Remi lives with her older brother and distant relative Sora since childhood. Sora used to be unfriendly rebellious child who appeared to have an issue with trust.