1-2) The Rabbit's Castle
Junpei has returned to the orphanage 5 years after his adoption by a mysterious and wealthy young heiress. Now he was to do the same for his fellow mate Shougo and Shougo agrees to the arrangement. However, Shougo doesn't understand Junpei's intentions; they weren't exactly on good terms before...

3. Goodbye, My Dolphin
   A pair of childhood friends is trying to come to terms with what happened a year ago.

4-5) Our Secret
The high schooler is feeling the crunch to perform sexually but he just can't get it up! Whereas his gay twin brother is having the time of his life. How is he going to solve his erectile dysfunction and keep his brother's harassers at bay?