After catching slimes for 300 years, I've finally decided on a birthday?! The truth is, I never really set a date (I don't even remember)! But since my daughters are going to celebrate it for me, I'm really, really looking forward to it! Besides that, I'll meet the goddess of fate (I'm not surprised anymore!), help a phantom thief (a new family is coming!), and travel through a mysterious land where there are no slimes! At the end, there's also a special inclusion of 'that short story' from the drama CD! Once again, I'm coming to you with a perfect volume!