In a not so distant future, full-dive VR technology has made it possible for people to travel into alternate realms. Protagonist Yuichi, known for his strong libido, frequents the adult services of a realm known as "The Manor". One day, Maria informs him that he was selected to be help Maria train for her courtesan exam, and the training is to carried out in his realm on Earth!

With a flash of light from his VR gear, and an eruption in sweet perfume, Maria materialized in the flesh ready to overwhelming his senses with fantastical other worldly pleasure!

"Don't look so surprised! I need you to give me lots of naughty training So I can become a proper courtesan
Please take good care of me, Yuichi-san! ♥"

[From Steam]