Tenshi Wo Ikasete Item Get!! Ikigacha De Dungeon Kouryaku! summary:

One day, was suddenly transported to a town centered around a dungeon. The special skill he was given was .This skill with a mysterious name does not simply summon an angel,rather it's a slightly strange skill in which angels are summoned for a price. ...Atleast that's what I thought,but it seems like “pleasure” is the price to pay!?Make the summoned angel cum and decide on the cheat boost. A very naughty journey to another world begins♪