The youngest fighter in the history of the Gundam Fight, Sai Saici acts quite stubbornly and is very immature. Despite mentors Keiun and Zuisen's attempts to calm him down, Sai Saici also remains mischievous and bratty (peeking in on Neo Russia's Nastasha Zabigov taking a bath). After Sai inherits the Ace of Clubs crest of the Shuffle Alliance, he soon realizes what it is like to mature into a man, such as finding his first love Cecile Holger and becoming more determined to fight for the revival of the long lost Shaolin Temple.