One day, Haruma Kouzai is suddenly transmigrated to a town centered around a dungeon. The special skill he received was called "Summon Angel."

This mysteriously named skill, which does not summon angels but rather summons angels for a price: in other words, a somewhat peculiar skill.

What's more, it seems the price consists of giving pleasure to the angel...!?

Get the summoned angel to orgasm fully, determine the cheat boost, a rather ecchi isekai conquest begins ♪