Ore wa Subete wo Parry suru: Gyaku Kanchigai no Sekai Saikyou wa Boukensha ni Naritai Temporada 1 Episódio 7

The person who attacked Rollo was Zadu, a man who was once an S-rank adventurer but turned into a vicious killer. Zadu hints that something big is going to happen in Kreis royal capital, but he doesnt know what it really means. Meanwhile, in the royal capital, Prince Rain is suffering from the aftermath of the attack, but wary of the next wave. At that time, what appeared in the sky above the royal capital was a threat on a scale beyond human comprehension - the Demon Dragon of Calamity.