Adult PC Game: Rengoku No Muma - Chapter 6 - v0.6.0 by Kimi-Kun Archive

Overview
A young [mc], isolated in a solitary life and supported by his parents, is run over by a truck and transported by a mysterious goddess to another world. In that place, a city full of fantastical creatures, he encounters a succubus who fascinates him. Determined to find her again, he begins exploring this unknown new world.

Rengoku No Muma - Chapter 6 - v0.6.0 by Kimi-Kun Gameplay Preview