Kian hari kian banyak orang yang meninggal akibat virus "influenza pembunuh" yang disebarkan oleh keluarga Amamiya. Sei berusaha mencari tahu penyebabnya. Lalu, dia mengirim Lu Mei untuk memata-matai keluarga Amamiya, dengan menghadiri pesta yang diadakan keluarga itu. Namun, rencana mereka diketahui musuh, sehingga Sei pun harus turun tangan membebaskan anak buahnya...
Akimi Yoshida (Japanese: 吉田秋生, Yoshida Akimi) is a Japanese cartoonist from Tokyo, best known for her manga series Banana Fish. Yoshida studied at the Musashino Art University in Tokyo and made her professional debut in 1977. Despite serialising her works in shōjo manga (girls' comics) magazines, most notably in 'Bessatsu Shōjo Comic' and 'Monthly Flowers', during the 80's she developed a visual style akin to the aesthetics of shōnen manga (boy's comics) of that era, contributing significantly to creating a bridge between these two traditions. This is particularly evident in her international best-seller Banana Fish (1985-1994), a thriller set in New York City blending action and homoerotic romance. Among her other major works are the series Yasha (1996-2002) and Umimachi Diary (2006-2018). Yoshida's comics have received a number of accolades in Japan, including three Shogakukan Manga Awards (1983 and 2001 in the category 'shojo', 2015 in the general category), an Excellence Award for manga at the Japan Media Arts Festival (2007) and the 6th Manga Taishō award (2013).