《OVERLORD》Why Did Shalltear Encounter the Platinum Dragon Lord?

Have you ever wondered why Shalltear was able to encounter the Platinum Dragon Lord? How did Shalltear, a Floor Guardian from Nazarick, end up facing one of the most powerful Dragon Lords in the New World? Why were these two powerful beings able to meet and fight each other? Curious to know what really happened? Watch the video to find out!