A Slave of Love
Nagasumi's mom and Sun go shopping for groceries, leaving Lunar alone with Nagasumi. Lunar plans to make her "slave" help her study for school since she is getting zeros on all her tests. Eventually it gets to the point where Lunar starts to come on to Nagasumi while outwardly stating that she would never fall in love with a human. Through many badly timed, but well-meaning errors, Nagasumi ends up being engaged to Lunar.
Aired 18/06/2007EP 12 - A Slave of Love

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.