Farewell Friend
Kai has an embarrassing problem about himself that he wants to keep a secret from others. It ends up that he just has a boil on his butt, however, Saru passes by the hospital where Kai had gone to pick up his medicine, and overhears the doctor and nurse talking about how Kai has an incurable disease. Saru then tells the others. Heartbroken, they all try to give Kai the best time of his life during his last moments.
Aired 17/09/2007EP 24 - Farewell Friend

My Bride is a Mermaid
Michishio Nagasumi's life couldn't be any more normal. In an odd twist of events, during his summer vacation he ends up almost drowning in the sea. Luckily, the cute mermaid Seto San appears to save him. However, San is from a yakuza mermaid family and according to their law, if a human is to catch sight of a mermaid, either he or the mermaid must die. The only other way is for Nagasumi to be taken in as a family member, marrying San. In attempts to save both of their lives, Nagasumi asks for San's hand in marriage. Nagasumi's summer vacation reaped more then what he would expect, as he must now protect San from others finding her secret out.