Akumakko wa Ijippari ~Anta nanka Atashi no Asoko de Sugu ni Toriko ni Shite Yarun Dakara!~

Shota, the protagonist, is a lazy college student who lives his days in self indulgence.

One day a demoness called Claire appears. She tells him she'll grant his wish in exchange for his soul.

Shota immediately realizes that Claire is ignorant about the ways of the world, and seizes his chance! He makes her swear to capture him by means of sex!

[From English DLSite]