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He has long golden hair draped over his shoulders and back. He has face with a lazy expression, a pair of pupils with a purple lustre, but not really double pupils. His appearance resembles Dai Mubai to at least seventy percent, only his stature was even taller.
Dai Weisi has an air of superiority and is arrogant and proud.
Dai Weisi makes his appearance at the Continental Advanced Spirit Master Academy Elite Tournament Finals as one of the seeded teams of the competition and faces off against the Shrek Academy.
He is shocked to discover the improvement of Dai Mubai and thinks to destroy him before he matures even further, thus threatening his status as the successor.
He immediately tries to attack his brother, but is locked down by the Shrek Seven Devils with a barrage of attacks. He is then attacked by the Spirit Fusion Hell White Tiger between Dai Mubai and Zhu Zhuqing, causing him to have heavy injuries with his bones being shattered.