The sudden revelation of the N-EXTREME seal, the fate of the world hangs in the balance...
The trauma from the great disaster that claimed his father's life a decade ago resurfaces as Sai witnesses another loss of life, causing him to go berserk. Can Sai confront his own past and fight once again to protect history and the world?
This is a Japanese-language book with all text in Japanese.
突如告げられるN-EXTREMEの封印、世界の命運は――…
10年前に起きた大災害によって父を亡くしたサイのトラウマが、再び人の死を目にしたことで呼び起こされ暴走してしまう…。歴史を、世界を守るため、自分の過去に立ち向かいサイは再び戦う事ができるのか…!?