The Third Man - S1.E8

Madoka and Gingka visit the opposing team's training camp to find out who the third blader is. Masamune stumbles on this third blader himself - "Chaoxin", a flashy blader in it for the glory of his fans. Masamune pushes him into battle where the laid-back Chaoxin is able to put Masamune's Striker away for good, even though he didn't take the battle seriously.