The Shiroi Ookami and the Final Battle

The Shiroi Ookami and the Final Battle/The White Wolf and the Final Battle (白い狼と最後の闘い Shiroi Ookami to Saigo no Tatakai) is the fifth book of the SO series.

Updates
The last chapter of this book was Chapter 24 - Soccer Captain; Kenjutsu Master, which was last updated on Wattpad.com on the 15th of July 2018.

Blurb/Description
English:

Now that the lab has been closed, Shin Aliea joins the High School Football Frontier. But a new team is there to take control of Shin Aliea's students and Japan - possibly even the world. It's up to the gang, yet again, to finish this! Let this be the Final Battle!

Japanese | 日本語:

今に研究所は砕いった, 真エイリアは他のFFIの高校を合います. でも新しいチームは真エイリアの学生と日本国を切り回たくて - 世界もあったら. 真エイリアはまたこれを終る! これは最後の闘いでしょう!