Files From: https://www.dlsite.com/girls/work/=/product_id/RJ386630.html/

Protagonist Mila is a nun-in-training that's been separated from her adventuring party.
Rio is an incubus dispatched by the demon lord.
Mila works to find her party, while Rio tries to fulfill his order to corrupt her in body and mind.
However, Mila is not so easily corrupted, and soon Rio is overtaken by affection.
Mila also has feelings for Rio, but her tsundere personality and relation to the heroes leave her unable to confess.

One day, the two get lost in the mountains, and Mila ends up getting captured and sold to a sl*ver.
Furthermore, she has lost her magical pendant that protects her against enemy magic.

Rio ends up saving her, but...

- A manga about the protagonist getting captured by sl*vers, and having sex with the incubus that saves her.