Restoration, Recovery
noun, の adjective, verbal noun
Restore to the former self. This is restoration.
ふっきゅう
This is a jukugo word that uses the on'yomi readings of the kanji. You should be able to read this on your own.
ビエトがトーフグのシステム復旧のために今一生懸命頑張っています。
Viet is working his hardest to restore the Tofugu system right now.