On a massive luxury cruise ship while at sea, the loyal butler and a mysterious woman cross paths as they try to uncover a murder-mystery that occurs on the ship.

Hiyori (Kei Tanaka) is an ornithologist (expert on birds). His wife is Rinko (Miki Nakatani). She is the leader the minority opposition party. One morning, Hiyori is about to travel…

A high school girl, Sayaka Kudō was the bottom of the class. After a year, she improved her deviation value from 30 to 70, then passed Keio University that is…