The Slime Diaries

As he's living out his amazing slime life, Rimuru decides to record his experiences in a diary, but there are so many that he doesn't know where to start.

Peace has come following the battle against the Orc Lord; Rimuru finds himself with a day off.

Summer has come to Tempest; when he learns that summers here weren't always this hot, Rimuru begins to fear that the change was his fault; Shuna and Shion have their own unique way to keep cool, and Rimuru tries to think up fun summer activities.

Rimuru and crew visit a lake to fight the summer heat.

Rimuru decides to throw a summer festival resembling the ones held in Japan; the monsters have never experienced a summer festival, but when they hear that it's a party, they go all-in to prepare.

Rimuru plans celebrations for the Bon Festival.