Sofia, the princess of S Kingdom is visiting Japan and intends to make the best of her remaining days as a single girl. In one month's time, she is to be married. She intends on using her remaining time having fun. Cain, the man that Sofia has been in love with since childhood has been sent to Japan at her wishes. He has been called to serve in the SP reserve forces for their country.

On the other hand, there is another waiting for her in Japan, who is also in love with her: A girl thief. She had tried to steal the princess's ring during her last visit to Japan only to fail and fall madly in love with her. Hearing the rumor of the princess's upcoming wedding, the girl thief wants nothing more than to prevent it from happening. The girl thief hears that the princess always wears a certain necklace that will be necessary for the wedding. She vows to steal this necklace. Thievery on one side and protection on the other: Even though their circumstances are very different, they both love her. You will see the feelings of these two entwined with the expectations of surrounding people.
The story begins...

[From Gamelex]