Konosuba : Sois béni monde merveilleux ! (この素晴らしい世界に祝福を!, Kono subarashii sekai ni shukufuku o!, litt. « Une bénédiction pour ce monde merveilleux ! »), abrégée KonoSuba (このすば) ou encore, Shukufuku (祝福) par son auteur, est une série de light novel écrite par Natsume Akatsuki.

Kazuma Satou is a reserved 16-year-old who loses his life in a tragic yet laughable accident. After his untimely death, Kazuma finds himself standing before Aqua—the self-proclaimed water goddess who presents him two with choices: to ascend to heaven or reincarnate in a real fantasy world. Picking the latter, Kazuma gets tasked with defeating the Demon King, an occurring threat in his new world. However, Aqua's provocative attitude strikes a nerve, and in the heat of the moment, Kazuma takes her along. Kazuma and Aqua, now stuck together in another world, embark on a journey. They soon acquire two more companions: Megumin, an archwizard wielding devastating explosion magic; and Lalatina "Darkness" Dustiness Ford, a crusader with a worrisome case of masochism. The four of them form an odd party, each member contributing their unique share of power and a peculiar personality. Unfortunately, their adventure soon proves to be challenging and costly, Kazuma's new life may be nothing but a headache. [Written by MAL Rewrite]

After Wiz wastes all the money Vanir made from Kazuma's patents on high quality Manatite, Vanir is forced to take up a job in consulting to pay the monthly rent of the shop. Aqua couldn't fall asleep, and decided to invade Wiz's shop to inquire about her and Vanir's past. Various characters consult Vanir for help.