帰還した元勇者はVRMMOで無双する。〜目指すはVTuber義妹を推して推しまくる生活～ (Associated Names)

The reason for returning to Earth? To pamper his little sister? One day, I was suddenly summoned to another world and successfully fulfilled my role as a hero within a year, then returned to Japan. I safely reunited with my little sister, all’s well that ends well… or so I thought. To my surprise, my…