Review Detail of Mary_Sue_Burnett in Become the Castellan in Another World

Great art and great story! There are some similarities between this story and Release That Witch. Someone from the “real world” finds himself in another world. Only in this case, the protaginist can go freely between the “real world” and the other world. And he buys resources in the “real world” so he can bring them to the other world. And like Roland in Release That Witch, he winds up gathering a harem in the other world.