The Raven Invader

The Raven Invader is the upcoming twelfth episode of The Rising of the Shield Hero anime.

Synopsis
The three heroes fight the mysterious new enemy and were easily defeated. Naofumi and his party take up the fight and begin to face the downhill battle. Even Filo and Raphtalia in their top game didn't able to make a scratch on the enemy. With no other option, Naofumi uses every trump card up his sleeve and was easily overwhelmed.

Is this the true battle of the wave? Can Naofumi and his party survive this wave?