Nuki Doki! Tenshi to Akuma no Sakusei Battle - Revolution

Nuki Doki! Tenshi to Akuma no Sakusei Battle - Revolution is a hentai series focusing on angels, demons, and their never-ending battle for the soul of humanity. Angel named Sera and demon named Firika are going to compete for the heart of a human by the name of Yamato. That's what's going to settle their battle.