Shuffle!  

A significant change occurred in our world when the doors connecting the realm of gods and the realm of demons unexpectedly opened. Ten years have passed since then, and now a young boy named Tsuchimi Rin is tasked with safeguarding two princesses from those dimensions. As he navigates through his everyday life at school alongside his childhood friend Kaede, he must also manage to coexist peacefully with the princesses and their powerful fathers, who are the rulers of the dimension Lords. The well-being of these girls rests in Rin's hands, as he holds the key to unlocking their hearts.