Chapter 13

A Formidable Opponent (ヤバイ敵, Yabai teki) is the 13th chapter of the Gleipnir manga series.

Characters

 * Shuichi Kagaya
 * Tadanori Sanbe
 * Claire Aoki
 * Elena Aoki (flashback)

Summary
While fighting with monster. The monster praises Shuichi that that attack will surely affect a normal human but he is tougher than others. When that monster pushed Shuichi to the edge Claire take control and battled him. Then they both understand that they are not in his legacy. With a single punch by the monster Shuichi and Claire are down. Claire suddenly took the gun and fired at him but it has no use. She also thinks this is were Elena Aoki is also there. Then he was bleed. On the other battle with Hikawa the bullet has passed through her, but now it has no effect on him. Then the monster changed to human form and showed his identity as Tadanori Sanbe he is a second year in Yamakita University. He thanked them for them for making him serious about their fight. Then sanbe changed into his monster form and laid a punch in the ground with a rage. Shuichi and Claire used that change to hide them self. But Sanbe enters the forest and destroy the forest to make themself appear. At the Shuichi (monster form) jumped into him from behind and captured him to make not to move. When he said that he cannot defeat him in way. Claire appears in front of him with that gun.