[Hiiro's](https://anilist.co/character/163250/) grandfather.

The hottest battle is about to begin! 
 
While attending Tensei Academy, Hiiro Ryuugasaki ends up acquiring a mysterious smartphone. It comes installed with the popular card game, Shadowverse! Meeting new rivals, facing major tournaments, forging bonds with friends... Shadowverse leads Hiiro to all sorts of new experiences, all that serve to "evolve" him... 
 
(Source: Crunchyroll)

Sequel to Shadowverse Flame: Seven Shadows-hen. 

Arc Ruler has declared that he will remake the world, and has caused all the world's Digital Friends to run amok as "Shade". The mission given to Light and his friends is to neutralize the three towers that are leading the world to destruction. Having obtained the "Negza System" for use against the Shade, Light and his friends aim for each tower while defeating the Shade. Now, the battle for the fate of the world begins! 

(Source: Crunchyroll News)

Shigefumi Ryuugasaki