Kaisha no on'na jōshi to issho ni i sekai tensei shite osananajimi ni natta (Associated Names)

Hiroya, a rookie office worker in a trading company, is suddenly reincarnated into another world along with his female boss, Kazumi. At the age of 8, his memories of his previous life return. This new world is a fantasy land filled with swords, magic, and monsters. Hiroya lives as the second son of a noble…