I Picked up a Goddess Who Turned Out to Be the Lord of Holy Light.

The protagonist comes from Blue Star and can travel between two worlds. I picked up a goddess who fell into the mortal world during the battle between the gods and lost her memory. Then the protagonist awakens to the Temple of the Undead and can control the undead. The two worlds resell items, use items from Blue Star to compare in the other world, and use items from the other world to compare in Blue Star. The single heroine's daily love routine is upgraded to a better outfit. This novel and its characters are purely fictitious. Any similarity is purely coincidental and should not be imitated.