I've Been Killing Slimes for 300 Years and Maxed Out My Level Volume 04

An invitation from Beelzebub leads to a family field trip to her homeland in the land of demons! But in the midst of such an important ceremony, will Halkara be able to mind her manners and avoid insulting the Demon King? Or will the Great Slime's prophecy come true?

• Franchise: I've Been Killing Slimes for 300 Years and Maxed Out My Level
• Author: Kisetsu Morita
• Length: 176 pages
• Paperback
• Publication date: 2 February 2021