Kono Kamen no Akuma ni Sodan wo!

Kazuma Sato is a video game-loving shut-in-or at least he was, until a humiliating traffic accident brings his young life to an untimely end. But after his death, a beautiful girl claiming to be a goddess invites him to enter another world and gain some respectable perks in the process. But Kazuma's choice is going to have serious consequences for the goddess and the dead man alike... (Source: Yen Press)

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.