As close encounters of the twisted kind between the residents of the planet Develuke represented primarily by the female members of the royal family and the inhabitants of Earth represented mainly by one very exhausted Rito Yuki continue to escalate, the situation spirals even further out of control. But when Momo decides she'd like to "supplement" Rito's relationship with LaLa with a little "sisterly love," you know LaLa's not going to waste any time splitting harems. Unfortunately, it's just about that point that Yami, the Golden Darkness, enters the scene with all the subtleness of a supernova, along with an army of possessed high school students! All of which is certain to make Rito's life suck more than a black hole at the family picnic.

As close encounters of the twisted kind between the residents of the planet Develuke represented primarily by the female members of the royal family and the inhabitants of Earth represented mainly by one very exhausted Rito Yuki continue to escalate, the situation spirals even further out of control. But when Momo decides she'd like to "supplement" Rito's relationship with LaLa with a little "sisterly love," you know LaLa's not going to waste any time splitting harems. Unfortunately, it's just about that point that Yami, the Golden Darkness, enters the scene with all the subtleness of a supernova, along with an army of possessed high school students! Raku Ichijo is an average high school student. He also happens to be the sole heir to the head of a Yakuza Family called the Shuei-gumi. They promised one another that they will "get married when they reunite.

Rito and the princesses of Deviluke are back again! Rito is having a hard time adjusting when Lala's sisters move in and her attempted seductions leave him perpetually frazzled! Rito learns that Yami still wants to kill him, and now she's an overnight guest in his house! However, it's not all rage and resentment! Momo continually tries to seduce Rito.

A drama CD was released in February , featuring an original story along with character songs. A episode anime television series adaptation by Xebec aired in Japan in Six original video animation episodes were produced by Xebec between April and April A episode anime television series adaptation by Xebec aired in