Wada has been showing off the game's development on social media; the game will adopt a first-person perspective, rather like Wizardry and Shining in the Darkness.
He seems to be rather proud of the game's "plump-bellied succubus", as shown below. "Seeing how the movement I made with the tool works effortlessly on the Mega Drive really shows how great tools are."
He's even shown the game running on actual Mega Drive hardware:
Wada has a connection with Yuzo Koshiro's Ancient studio – his previous titles have been released by that company.
Ancient is currently working on its own Mega Drive game, the shmup Earthion.