An elf girl is sent to the modern age and gets into a lot of H RPG v.1.01

Cleome - an elf and noblewoman, receives a stone from a homeless man on her way to a party.
When Cleome leaves the party, the stone she received starts to glow and she is transported to the present day.
There, she meets Yuto, who lets her stay at his house.
She finds the stone that caused her to be sent back to the present day in an antique shop, but is told that it costs 3 million yen.
Cleome can't possibly afford it, so she decides to work.
Will she be able to return safely to her original world...?