Blu-ray 4

 is the fourth Blu-ray of the anime adaptation of That Time I Got Reincarnated as a Slime.

Episodes

 * Episode 19: Charybdis
 * Episode 20: Yuuki Kagurazaka
 * Episode 21: Shizu-san's Students
 * Episode 22: Conquering the Labyrinth
 * Episode 23: Saved Souls
 * Episode 24: Extra: Black and a Mask

Add-ons

 * 50 Page Special Booklet written by Fuse
 * That Time I Got Reincarnated as a Slime: Lords of Tempest limited serial code
 * Episode 24.5: Tales: Veldora's Journal 1
 * Episode 23 Audio Commentary featuring Miho Okasaki (Rimuru), Chikahiro Kobayashi (Ranga), Anzu Haruno (Ramiris), Haruka Shiraishi (Alice) and Azusa Tadakoro (Chloe)
 * Storage Box by character designer Ryouma Ebata
 * Digital Jacket by manga artist Taiki Kawakami