Succubus ~Ochita Tenshi~

Main character Toshiki Kannazuki is an ordinary salary-man who lives with his lover. One day cousin invited his lover on a trip to Middle East country Taglania. Toshiki reluctantly agreed to let them go. However, an aircraft crash accident occurs and Toshiki flies over to try to identify the bodies. On arrival he meets a mysterious beauty Maya. He accepts her hospitality not knowing that succubus inhabits this region.

[From vndbreview]